# What is general equation of circle?

## What is general equation of circle?

Equation of a Circle in General Form The general equation of any type of circle is represented by: x2 + y2 + 2gx + 2fy + c = 0, for all values of g, f and c.

### Is a squiggly line a function?

The vertical line test can be used to determine whether a graph represents a function. If we can draw any vertical line that intersects a graph more than once, then the graph does not define a function because a function has only one output value for each input value.

How do you translate a sine wave?

Identify the phase for a sine or cosine function. Graph a sine or cosine function having a horizontal and vertical translation. In general, the graph of y = f(x) + k is the graph of y = f(x) translated k units vertically. If k is a positive number, the translation is up.

What are cubic graphs called?

Cubic graphs, also called trivalent graphs, are graphs all of whose nodes have degree 3 (i.e., 3-regular graphs).

## What does a positive quadratic graph look like?

When “a” is positive, the graph of y = ax2 + bx + c opens upward and the vertex is the lowest point on the curve. As the value of the coefficient “a” gets larger, the parabola narrows. When “a” is negative, the parabola opens downward and the vertex is the highest point on the curve.

### Does every graph represent a function?

The vertical line test can be used to determine whether a graph represents a function. If we can draw any vertical line that intersects a graph more than once, then the graph does not define a function because that x value has more than one output. A function has only one output value for each input value.

How do you find the maximum and minimum of a vertex?

HOW TO FIND THE MINIMUM OR MAXIMUM VALUE OF A FUNCTION IN VERTEX FORM

1. Vertex form of a quadratic function : y = a(x – h)2 + k.
2. Minimum value of parabola : If the parabola is open upward, then it will have minimum value.
3. Maximum value of parabola : If the parabola is open downward, then it will have maximum value.

What is the opening of the graph if A is positive?

If a is positive, the graph opens to the right; if a is negative, the graph opens to the left. Example: Write the equation of the axis of symmetry, and find the coordinates of the vertex of the parabola y=−3×2−6x+4.

## What are U shaped graphs called?

The graph of a quadratic function is a U-shaped curve called a parabola. The extreme point ( maximum or minimum ) of a parabola is called the vertex, and the axis of symmetry is a vertical line that passes through the vertex.

### Can a parabola have a maximum and a minimum?

When the parabola opens down, the vertex is the highest point on the graph — called the maximum, or max. Only vertical parabolas can have minimum or maximum values, because horizontal parabolas have no limit on how high or how low they can go.

How do you tell if a graph represents a function?

Use the vertical line test to determine whether or not a graph represents a function. If a vertical line is moved across the graph and, at any time, touches the graph at only one point, then the graph is a function. If the vertical line touches the graph at more than one point, then the graph is not a function.

What is an upside down parabola called?

Also, if a is negative, then the parabola is upside-down. This point, where the parabola changes direction, is called the “vertex”. Advertisement. If the quadratic is written in the form y = a(x – h)2 + k, then the vertex is the point (h, k).

## Can a parabola be a straight line?

A parabola is a curve where any point is at an equal distance from: a fixed point (the focus ), and. a fixed straight line (the directrix )

### What are some examples of parabolas in real life?

When liquid is rotated, the forces of gravity result in the liquid forming a parabola-like shape. The most common example is when you stir up orange juice in a glass by rotating it round its axis. The juice level rises round the edges while falling slightly in the center of the glass (the axis).

How do you translate sin graphs?

Just like other functions, sine and cosine curves can be translated to the left, right, up, and down.

1. The general equation for a sine and cosine curve is y=Asin(x−h)+k and y=Acos(x−h)+k,respectively.
2. Graph y=sin(x+2)+3.
3. Step 3: The horizontal shift is the hardest to find.
4. Graph the following functions on [−π,3π]:

How do you know where a parabola opens?

There is an easy way to tell whether the graph of a quadratic function opens upward or downward: if the leading coefficient is greater than zero, the parabola opens upward, and if the leading coefficient is less than zero, the parabola opens downward.

## What is a parabolic curve?

In mathematics, a parabola is a plane curve which is mirror-symmetrical and is approximately U-shaped. The parabola is the locus of points in that plane that are equidistant from both the directrix and the focus.

### Is the McDonald’s arch a parabola?

The Golden Arches are the symbol of McDonald’s, the global fast-food restaurant chain. The McDonald’s logo is a perfect example of parabolas appearing in life. If they were to be expressed in equations, we know that they would be negative parabolas, and that “a” would be greater than 1 because of how stretched it is.

Is Sine horizontal or vertical?

The Sine and Cosine This page contains a more detailed examination of the behavior of the sine (vertical component of the angle or ratio of opposite leg to hypotenuse) and cosine (horizontal component of the angle or ratio of adjacent leg to hypotenuse) functions.

How do you transform a trig graph?

The graphs of the six basic trigonometric functions can be transformed by adjusting their amplitude, period, phase shift, and vertical shift. The amplitude of a sinusoidal trig function (sine or cosine) is it’s ‘height,’ the distance from the average value of the curve to its maximum (or minimum) value.

## How do you transform a sine graph?

In sin(x+c), when you are at x radians on a graph, your y is sin(x+c). So if c is positive, you look ahead c radians to find y. Therefore your graph is shifted to the left by c. And if c is negative you use y for an angle c radians less than where you are (x), so the graph is shifted to the right by c.

### When A is positive the parabola opens?

If a is positive, the parabola opens up or to the right. If it is negative, it opens down or to the left. The vertex is at (h, k).

How do u find the turning point of a parabola?

If the parabola opens up, the vertex represents the lowest point on the graph, or the minimum value of the quadratic function. If the parabola opens down, the vertex represents the highest point on the graph, or the maximum value. In either case, the vertex is a turning point on the graph.

What does a cos graph look like?

To graph the cosine function, we mark the angle along the horizontal x axis, and for each angle, we put the cosine of that angle on the vertical y-axis. The result, as seen above, is a smooth curve that varies from +1 to -1. It is the same shape as the cosine function but displaced to the left 90°.

## What is the equation of the circle with center 0 0 that passes through the point (- 8 3?

The equation of the circle is x^2 + y^2 = 25 Given that the center of the circle is the point (0,0).

### Would a circle on a graph be a function?

The first graph is a circle, the second is an ellipse, the third is two straight lines, and the fourth is a hyperbola. In each example, there are values of x for which there are two values of y. So these are not graphs of functions.

How do you draw a graph step by step?

1. Step 1: Identify the variables.
2. Step 2: Determine the variable range.
3. Step 3: Determine the scale of the graph.
4. Step 4: Number and label each axis and title the graph.
5. Step 5: Determine the data points and plot on the graph.
6. Step 6: Draw the graph.

What is the center of a circle called?

A circle is a set of all points in a plane that are all an equal distance from a single point, the center. The distance from a circle’s center to a point on the circle is called the radius of the circle. A line segment that crosses the circle by passing through the center of the circle is called the diameter.

## How do you find the center of a circle with 3 points?

Circle Touching 3 Points

1. Join up the points to form two lines.
2. Construct the perpendicular bisector of one line.
3. Construct the perpendicular bisector of the other line.
4. Where they cross is the center of the circle.
5. Place compass on the center point, adjust its length to reach any point, and draw your circle!

### How do you find the standard form of a graph?

The standard form for linear equations in two variables is Ax+By=C. For example, 2x+3y=5 is a linear equation in standard form. When an equation is given in this form, it’s pretty easy to find both intercepts (x and y).

How do you find the general form?

Solution: To find the equation in general form, you need to determine what A,B, and C are. Let’s start this example by finding the equation in point-slope form. To change this to general form we need to get the x- and y-terms on the same side of the equation and the numbers on the other side.

How do you create a graph design?

Make all types of graphs with ease. Here’s how:

1. Tell a story with your data. Our library of free graphs and charts makes visualizing your data simple.
2. Pick the right graph template for your data.

## How do you make a circle a function?

Center away from the origin

1. Locate the center of the circle from the equation (h, v). Place the center of the circle at (3, –1).
2. Calculate the radius by solving for r.
3. Plot the radius points on the coordinate plane.
4. Connect the dots to the graph of the circle with a round, smooth curve.

### What is the equation of a circle with endpoints?

(x−h)2+(y−k)2=r2 ( x – h ) 2 + ( y – k ) 2 = r 2 is the equation form for a circle with r radius and (h,k) as the center point. In this case, r=√26 and the center point is (2,7) . The equation for the circle is (x−(2))2+(y−(7))2=(√26)2 ( x – ( 2 ) ) 2 + ( y – ( 7 ) ) 2 = ( 26 ) 2 .

How do you find the center of a circle with coordinates?

The formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. If a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.

What is the center of a circle?

The center of a circle is the point equidistant from the points on the edge. Similarly the center of a sphere is the point equidistant from the points on the surface, and the center of a line segment is the midpoint of the two ends.

## How do you write an equation for a circle on a graph?

Use the Distance Formula to find the equation of the circle. Substitute (x1,y1)=(h,k),(x2,y2)=(x,y) and d=r . Square each side. The equation of a circle with center (h,k) and radius r units is (x−h)2+(y−k)2=r2 .

### What function makes a circle on a graph?

The first thing you need to know in order to graph the equation of a circle is where on a plane the center is located. The equation of a circle appears as (x – h)2 + (y – v)2 = r2. This is called the center-radius form (or standard form) because it gives you both pieces of information at the same time.

How do you find the center and radius of a circle with 3 points?

The task is to find the equation of the circle and then print the center and the radius of the circle. Equation of circle in general form is x² + y² + 2gx + 2fy + c = 0 and in radius form is (x – h)² + (y -k)² = r², where (h, k) is the center of the circle and r is the radius. The equation of the circle is x2 + y2 = 1.