SOLUTION: I am having a problem answering this question. Find the value of x or y so that the line passing through the two points has the given slope. (-3,y)(-9,-2); m=1. I got -3y=18, y=-6.

Algebra ->  Coordinate-system -> SOLUTION: I am having a problem answering this question. Find the value of x or y so that the line passing through the two points has the given slope. (-3,y)(-9,-2); m=1. I got -3y=18, y=-6.      Log On


   

Question 130303This question is from textbook Pre-Algebra
: I am having a problem answering this question. Find the value of x or y so that the line passing through the two points has the given slope. (-3,y)(-9,-2); m=1. I got -3y=18, y=-6. Am I doing it correctly. This question is from textbook Pre-Algebra

Found 2 solutions by checkley71, solver91311:
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
I'M AFRAID IT ISN'T CORRECT.
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SLOPE=(Y2-Y1/(X2-X1)
1=(-2-Y)/-9+3)
1=(-2-Y)/-6
1*-6=-2-Y
-6=-2-Y
Y=-2+6
Y=4 ANSWER.

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!
The slope is given by %28y%5B1%5D-y%5B2%5D%29%2F%28x%5B1%5D-x%5B2%5D%29. So just substitute the coordinates from the two points. It doesn't really matter, but I'm calling (-3,y) P%5B1%5D and (-9,-2) P%5B2%5D.

%28y-%28-2%29%29%2F%28%28-3%29-%28-9%29%29

%28y%2B2%29%2F6

But we are given that the slope equals 1, so:

%28y%2B2%29%2F6=1

y%2B2=6

y=4