(-8,1)(-8,10)

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=10-(1)-8-(-8)

Simplify.

Multiply -1 by -8.

10-(1)-8+8

Add -8 and 8.

10-(1)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 (-8,1) , (-8,10)