Answer:
(5, - 1 )
Step-by-step explanation:
Given the 2 equations
y = - 5x + 24 → (1)
y = 4x - 21 → (2)
Substitute y = 4x - 21 into (1)
4x - 21 = - 5x + 24 ( add 5x to both sides )
9x - 21 = 24 ( add 21 to both sides )
9x = 45 ( divide both sides by 9 )
x = 5
Substitute x = 5 into either of the 2 equations and evaluate for y
Substituting into (2)
y = 4(5) - 21 = 20 - 21 = - 1
solution is (5, - 1 )
