Question

Determine if (2, - 1) is a solution 2x - 4y = 8 to the system - 3x + 6

Answer 1

not a solution

Explanation:

substitute the coordinates of the point into both equations and compare values on both sides. If both equations are true then the point is a solution.

2(2) - 4(- 1) = 4 + 4 = 8 ← true

- 3(2) + 6 = - 6 + 6 = 0 ≠ - 1

then (2, - 1 ) is not a solution of the system