Question

Use substitution to solve the system of equations.

y = 4.5x + 7.5
y = –3.5x – 4.5

Answer 1

Answer: 1x=3

Step-by-step explanation: y=4.5x+7.5=y=-3.5x-4.5

x=3

Answer 2

`(-(3)/(2),(3)/(4))`

Explanation:

4.5x+7.5= -3.5x-4.5

x= -
`(3)/(2)`

y=3.5 ×
`(-(3)/(2)) -4.5`

y=
`(3)/(4)`