SOLUTION: The point (2, -5) is a solution to which of the following equations? y = -3x + 1 y = -3x - 5 y = -3x - 3 y = -3x + 5

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: The point (2, -5) is a solution to which of the following equations? y = -3x + 1 y = -3x - 5 y = -3x - 3 y = -3x + 5       Log On


   

Question 148344: The point (2, -5) is a solution to which of the following equations?
y = -3x + 1
y = -3x - 5
y = -3x - 3
y = -3x + 5
Answer by Edwin McCravy(20055) About Me  (Show Source):
You can put this solution on YOUR website!
The point (2, -5) is a solution to which of the following equations?
y+=+-3x+%2B+1
y+=+-3x+-+5
y+=+-3x+-+3
y+=+-3x+%2B+5

We substitute x=2 and y=-5 in each one

y+=+-3x+%2B+1
-5=-3%282%29%2B1
-5=-6%2B1
-5=-5 which is true

y+=+-3x+-+5
-5=-3%282%29-5
-5=-6-5
-5=-11 which is false

y+=+-3x+-+3
-5=-3%282%29-3
-5=-6-3
-5=-9 which is false

y+=+-3x+%2B5
-5=-3%282%29%2B5
-5=-6%2B5
-5=-1 which is false.

So only the first one is true. So the
only answer is

y+=+-3x+%2B+1

Edwin