SOLUTION: Use substitution to solve each system of equations. x=2y 4x+2y=15

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Question 187987This question is from textbook Algebra 1
: Use substitution to solve each system of equations.
x=2y
4x+2y=15 This question is from textbook Algebra 1

Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!


Given: system%28x=2y%28EQN1%29%2C4x%2B2y=15%28EQN2%29%29
Subst. EQN 1 in EQN2:
4%28highlight%282y%29%29%2B2y=15
8y%2B2y=15 ----> 10y=15 --->cross%2810%29y%2Fcross%2810%29=cross%2815%291.5%2Fcross%2810%29
red%28y=1.5%29, subst. in EQN 1:
x=2%281.5%29=red%283%29
These 2 lines intersect at point (3,1-1/2)
---> RED (EQN 1);; GREEN (EQN 2)
Thank you,
Jojo