SOLUTION: is (5,12)a solution to the equation: y = − 4x + 3. Prove your answer!

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Question 1019079: is (5,12)a solution to the equation: y = − 4x + 3. Prove your answer!
Found 2 solutions by fractalier, Theo:
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
We substitute in for x and y and see if we have a true statement...like this...
y = -4x + 3
12 = -4(5) + 3
12 = -20 + 3
12 = -17
12 does not equal -17 so it is NOT a solution.

Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
(5,12) means x = 5 when y = 12, or y = 12 when x = 5.

equation is y = -4x + 3

when x = 5, y = -4x + 3 becomes y = -4*5 + 3 which becomes y = -20 + 3 which becomes y = -17.

when y = 12, y = -4x + 3 becomes 12 = -4x + 3.
subtract 3 from both sides of this equation to get 9 = -4x
divide both sides of this equation by -4 to get x = -9/4.

(5,12) is not a solution to the equation of y = -4x + 3.