Question

Find the equation of the line through points (-8,5) and (-8,8) Help!

Answer 1

first we need to find the slope. Do you know how to do that ?

Answer 2

no :/

Answer 3

\(\bf slope = m= \cfrac{rise}{run} \implies \cfrac{y_2-y_1}{x_2-x_1}\)

Answer 4

there is a formula : slope(m) = (y2 - y1) / (x2 - x1)
and your points :
(-8,5) x1 = -8 and y1 = 5
(-8,8) x2 = -8 and y2 = 8

now just sub our stuff into the formula...
slope(m) = (8 - 5) / (-8 - (-8)
slope(m) = 3/0

This is an undefined slope. This means that the line is vertical, therefore we only need the x coordinate. What is the x coordinate in both sets of points ?

Answer 5

the x coordinate is -8?

Answer 6

correct. So your equation is x = -8

Answer 7

So x= -8 would be the answer?

Answer 8

yes

Answer 9

wow. ok, thank you!

Answer 10

no problem :)