SOLUTION: The points (2,5) and (3,y) are on the same line. Find y when the slope of the line is -2

Algebra ->  Coordinate-system -> SOLUTION: The points (2,5) and (3,y) are on the same line. Find y when the slope of the line is -2      Log On


   

Question 254663: The points (2,5) and (3,y) are on the same line. Find y when the slope of the line is -2
Found 2 solutions by drk, stanbon:
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
We need the slope formula which is:
m+=+%28y2-y1%29+%2F+%28x2-x1%29
we know coordinates and m. Substitute them to get
-2+=+%28y-5%29+%2F+%283-2%29
will give us
-2+=+y+-+5
y+=+3

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The points (2,5) and (3,y) are on the same line. Find y when the slope of the line is -2
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slope = (y-5)/(3-2) = -2
Solve for "y":
y-5 = -2
y = 3
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Cheers,
Stan H.