Answer:
(- 3, - 23 )
Step-by-step explanation:
y = 5x - 8 → (1)
y = x - 20 → (2)
substitute y = 5x - 8 into (2)
5x - 8 = x - 20 ( subtract x from both sides )
4x - 8 = - 20 ( add 8 to both sides )
4x = - 12 ( divide both sides by 4 )
x = - 3
substitute x = - 3 into (2)
y = x - 20 = - 3 - 20 = - 23
solution is (- 3, - 23 )
