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Select all coordinate pairs that could represent a solution to 3x - 2y = 12

Select all coordinate pairs that could represent a solution to 3x - 2y = 12-example-1
User Martlark
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1 Answer

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So you just need to find the pairs that work in when you substitute them in, we can go through them one by one.

When you have

(2,-3) x= 2 and y = -3 so if we put this into the equation you get
(3x2) -(2x-3) which is 6–6 which is 6+6 which is 12, so this coordinate is CORRECT

(4,0)
X= 4, y =0
(3x4) - (3x0) = 12 so is CORRECT

(5,-1)
X= 5 y = -1
(3x5) - (2x-1) = 15- -2 = 15+2 = 17 so is INCORRECT

(0,-6)
X= 0 y= -6
(3x0) - (2x -6) = 0- -12 = 0 + 12 = 12 so is CORRECT

(2,3)
X = 2, y=3
(3x2)- 2x3 = 6-6 = 0 so is INCORRECT

Hope this helps, let me know if you have any questions
User Joky
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