Question

Solve the system of equations by substitutión.
y =-4x+5
y = 3x - 16

Answer 1

y = - 4x + 5 ---1

y = 3x - 16 ---2

Substitute 1 into 2:

- 4x + 5 = 3x - 16

7x = 21

x = 3

Substitute x into 1:

y = - 4(3) + 5

= - 7