Question

I need help with the slope of a line if the given points are (2,2) and (-2,-1)

Answer 1

Use the equation \[y_{2}-y_{1} \over x_{2}-x_{1}\]

Answer 2

2 is \[x_{1} \]
2 is \[y_{1}\]
-2 is \[x_{2}\]
-1 is \[y_{2}\]

Answer 3

So how do I put the numbers in the equation?

Answer 4

Post above ^^

Answer 5

So if you say that the equation is y2 - y1 / x2 - x1, then the problem is -1 - 2 / -2 - 2?

Answer 6

Yes

Answer 7

So that makes the answer -3 / -4?

Answer 8

Yup!

Answer 9

Awesome! Does it stay negative or turn positive?

Answer 10

Since both the numerator and denominator are negative, they both turn positive. So the answer is 3/4.

Answer 11

Thank you!

Answer 12

We're in a junior high math class and we thank you for your help!

Answer 13

No problem! ^_^

Answer 14

This site has lots of good (and short) videos

http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/v/slope-of-a-line