4(6x - 10) = 8x + 40
2 answers:
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Answer:
x = 4
Step-by-step explanation:
If you were to plot the given points, you would quickly see that this is a vertical line where x = 4 (a visual is always a good place to start).
Vertical lines have a slope that is undefined and are written in the form of x = .
If you had plugged into the slope formula , where (
) is (4, 8) and (
) is (4,6) the result would be as follows:
=
=
Because you can not divide by 0, the slope is in fact undefined.