whitch of the following is the slope between the points (0,-7) and (4,12)?
19/4
-19/4
4/19
-4/19

Question

whitch of the following is the slope between the points (0,-7) and (4,12)?
19/4
-19/4
4/19
-4/19

mathstudent55 · Answer

The slope is the difference in the y coordinates divided by the difference in the x coordinates.

The y-coordinates are 12 and -7.
What is the difference between them? 
What is 12 - (-7) = ?

littlebird · Answer

attachment

anonymous · Answer

19/4

anonymous · Answer

alright i get it thank you im not good at math at all.

texaschic101 · Answer

slope(m) = (y2 - y1) / (x2 - x1)

(0, -7)  x1 = 0 and y1 = -7
(4,12)  x 2 = 4 and y2 = 12

m = (12 - (-7) / (4 - 0)
m = (12 + 7) / 4
m = 19/4

thats right

texaschic101 · Answer

so does it really matter which way the formula goes ?
He has the formula (y1 - y2) / (x1 - x2)
I do it this way : (y2 - y1) / (x2 - x1)

texaschic101 · Answer

@mathstudent55

ybarrap · Answer

It doesn't matter because $ \dfrac{-m}{-1}= m$. Or more visually:
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