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

Answer:

$(-\frac{3}{2},\frac{3}{4})$

Step-by-step explanation:

4.5x+7.5= -3.5x-4.5

x= -$\frac{3}{2}$

y=3.5 ×$(-\frac{3}{2}) -4.5$

y=$\frac{3}{4}$