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

2 Answers

5 votes
Refer to the photo. Answer: x=1, y=-3
6x-9=y y=-3x Solve the system of linear equations by substitution-example-1
User Weisjohn
by
4.4k points
3 votes

Answer:

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

User Danny Connell
by
4.5k points