SOLUTION: How do you find y when given (5,2) (2,y) and the slope is 3? I got: y=3(-5/2)+2 -15/6+2= -17/6?

Algebra ->  Linear-equations -> SOLUTION: How do you find y when given (5,2) (2,y) and the slope is 3? I got: y=3(-5/2)+2 -15/6+2= -17/6?      Log On


   

Question 372689: How do you find y when given (5,2) (2,y) and the slope is 3?
I got: y=3(-5/2)+2

-15/6+2= -17/6?
Found 2 solutions by Fombitz, ewatrrr:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You used the slope intercept form of a line but you don't know the intercept.
Use the formula for slope.
m=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29
3=%28y-2%29%2F%282-5%29
y-2=-9
highlight%28y=-7%29

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

find y when given (5,2) (2,y) and the slope is 3

slope = 3 = 3/1  as y increases or decreases by 3, x increases or decreases by 1

Here, x has decreased by 3, therefore,y has decreased by 9 (3/1 = 9/3)

(5,2)   (5,2) 

(2,y)   (2,-7)

y = -7