Question

Find the solution of system of equation y= x-4 y=4x+2

Answer 1

(x, y) = (-2, -6)

Explanation:

Equate the two expressions for y to get an equation in x alone.

x -4 = 4x +2

-6 = 3x . . . . . . . subtract 2+x

-2 = x . . . . . . . . divide by 3

y = -2-4 = -6 . . . use the first equation to find y

The solution is (x, y) = (-2, -6).