Question

6x-9=y
y=-3x
Solve the system of linear equations by substitution

Answer 1

Refer to the photo. Answer: x=1, y=-3

Answer 2

Explanation:

y= -3x

so we can substitute that into the first equation

which will turn into 6x-9=-3x

add 3x to both sides

9x-9=0

add 9 to both sides

9x=9 now divide

x=1

and y = -3x

y=-3