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28-02-2018
Mathematics

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You must use the substitution method. 3x+2y=11
y=5x-1

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petep1919 petep1919

28-02-2018

plug in y=5x-1 for y in 3x+2y=11

3x+2(5x-1)=11
3x+10x-2=11
13x=13
x=1

plug x=1 to y=5x-1 to find y

y=5(1)-1
y=5-1
y=4

ANSWER: x=1 and y=4 which is (1,4) as an ordered pair

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