Question

Which of the ordered pairs are solutions for the equation x+4y=6: (-6,3), (6,0), (2,1), (-10,4)?

Answer 1

All of them.

Explanation:

Let's calculate `f(x,y) = x + 4y`

`f(-6, 3) = -6 + 4 * 3 = 6`

`f(6, 0) = 6 + 4 * 0 = 6`

`f(2, 1) = 2 + 4 * 1 = 6`

`f(-10, 4) = -10 + 4 * 4 = 6`