Question

Y=-3x

4x-y=14

The given system of equations has solution (x, y). What is the value of x?

Answer 1

x = 2

Explanation:

y = -3x ... [1]

4x - y = 14 ... [2]

substitute [1] into [2], so [2] becomes:

4x - (-3x) = 14

4x + 3x = 14

7x = 14

x = 2