###### Asked in Math and ArithmeticAlgebraGeometry

Math and Arithmetic

Algebra

Geometry

# How do you find the x and y intercept?

## Answer

###### Wiki User

###### April 25, 2012 4:36PM

It depends on whether you are doing the question graphically or algebraically.

**Working from a graph:**

The x-intercepts are the points where the graph cuts the x-axis. The y-coordinates of these points are 0.

The y-intercepts are the points where the graph cuts the y-axis. The x-coordinates of these points are 0. A function cannot do this since then it would be a one-to-many mapping which is NOT a function. However, some equations (eg a circle) may give rise to more than one y-intercepts.

**Working from an equation:**

Let y = 0 and find the values of x that satisfy the equation. These are the x-intercepts.

Let x = 0 and find the values of y that satisfy the equation. These are the y-intercepts.

## Related Questions

###### Asked in Algebra

### How do you find x-intercept?

###### Asked in Math and Arithmetic, Algebra, Geometry

### How do you find the x and y intercepts?

Slope and
y-intercept
In the general equation of the line, y=mx+b, the slope is m and the
y-intercept is b.
You can find the y-intercept for a linear equation in any form
by setting x to zero and solving for y. Similarly, you can find the
x-intercept by setting y to zero and solving for x.
In the above general equation, the x-intercept is -b/m.

###### Asked in Math and Arithmetic, Algebra

### How do you find the x and y intercept of -4 plus 8y equals 16?

Your equation does not have an x variable. So as-is would be a
horizontal line (no x-intercept). If this was a typo and you meant
to have x in one of the terms then it would have an x and y
intercept.
The y intercept is where it intersects the y-axis. The x
coordinate of the y-axis is x=0, so substitute x=0 into the
equation, and solve for y.
To find the x-intercept, substitute y=0, and solve for x.