(1,4) , (1,5)

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=5-(4)1-(1)

Simplify.

Multiply -1 by 1.

5-(4)1-1

Subtract 1 from 1.

5-(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 (1,4) , (1,5)