X =-7 is a vertical line that passes through the pt (-7,0)

The slope is defined as the (change in y)/(change in x)

There is no change in x. Zero

The slope = (change in y)/0 is undefined. Because of division by zero.

X =-7 is a vertical line that passes through the pt (-7,0)

The slope is defined as the (change in y)/(change in x)

There is no change in x. Zero

The slope = (change in y)/0 is undefined. Because of division by zero.

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