Find the slope of the straight line that passes through the given points or state that the slope is undefined. Then indicate if the line through the points rises (left to right), falls (left to right), is horizontal, or is vertical

(1, 7) and (-2, -2)

Question

Find the slope of the straight line that passes through the given points or state that the slope is undefined. Then indicate if the line through the points rises (left to right), falls (left to right), is horizontal, or is vertical

(1, 7) and (-2, -2)

anonymous · Answer

@iGreen @robtobey

igreen · Answer

Plug them into the slope formula.

$m = \dfrac{-2-7}{-2-1}$

anonymous · Answer

the slope is always able to be found if you do what @iGreen is showing now! :D

igreen · Answer

Yep, and if the slope is positive, it'll rise from left to right.

If it's negative, it'll fall from left to right.

anonymous · Answer

I answered this same question for him like 6 minutes ago xD

anonymous · Answer

Okay so it would be -2 - 7 = 5 and -2 - 1 = -1 ?

igreen · Answer

-2 - 7 isn't 5

igreen · Answer

-2 - 1 isn't -1 either

anonymous · Answer

Oh crap sorry. -2 -7 = 9 and -2 - 1 = -3 right?

igreen · Answer

-9, not 9

igreen · Answer

That gives us:

-9/-3

Divide

anonymous · Answer

3 ?

igreen · Answer

Yep, that's the slope

igreen · Answer

So the line rises from left to right.

anonymous · Answer

Thank you for walking me through this. Your very helpful . Can I ask one more in another question box?

igreen · Answer

Sure thing