SOLUTION: Solve each equation for y. Then find the value of y for each value of x. x = 9 – 3y; x = –3, 6, 12

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons  -> Linear Equations Lesson -> SOLUTION: Solve each equation for y. Then find the value of y for each value of x. x = 9 – 3y; x = –3, 6, 12      Log On


   

Question 983873: Solve each equation for y. Then find the value of y for each value of x.
x = 9 – 3y; x = –3, 6, 12
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
x=9-3y
x-9=-3y
9-x=3y
(9-x)/3=y
3-(x/3)=y
ANSWER: y=3-(x/3)
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For x=-3:
y=3-(-3/3)=3+1=4
ANSWER:(-3,4)
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For x=6:
y=3-(6/3)=3-2=1
ANSWER: (6,1)
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Try the last one on your own.