Question

Find the slope of the line that goes through the given points. (-4,-2) and (-4,-1)

Answer 1

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Explanation:

The formula of a slope:

`m=(y_2-y_1)/(x_2-x_1)`

We have the points (-4, -2) and (-4, -1).

Substitute:

`m=(-1-(-2))/(-4-(-4))=(-1+2)/(-4+4)=(1)/(0)`

Division by 0 is not possible!

Therefore the slope is undefined.

(-4, -2) (-4, -1)

We have the same x = -4 in the coordinates of the points. Therefore it's a vertical line. Vertical line has undefined slope.