Question

2 x + y = 8 x + y = 4 The lines whose equations are given intersect at

Answer 1

(4, 0 )

Explanation:

2x + y = 8 → (1)

x + y = 4 ( subtract x from both sides )

y = 4 - x → (2)

substitute y = 4 - x into (1)

2x + 4 - x = 8

x + 4 = 8 ( subtract 4 from both sides )

x = 4

substitute x = 4 into (2)

y = x - 4 = 4 - 4 = 0

solution is (4, 0 )