(9,-4)(9,7)

Slope is equal to the change in y over the change in x, or rise over run.

m=change in ychange in x

The change in x is equal to the difference in x-coordinates (also called run), and the change in y is equal to the difference in y-coordinates (also called rise).

m=y2-y1x2-x1

Substitute in the values of x and y into the equation to find the slope.

m=7-(-4)9-(9)

Simplify.

Multiply -1 by 9.

7-(-4)9-9

Subtract 9 from 9.

7-(-4)0

The expression contains a division by 0 The expression is undefined.

Undefined

Undefined

Undefined

Since the slope is undefined, this is a vertical line. Vertical lines have no y-intercept.

No y-intercept

The slope is undefined and there is no y-intercept.

Slope: Undefined

No y-intercept

Find the Slope and Y-Intercept (9,-4) , (9,7)