I need help finding the y value.
2 answers:
Hey there! :D So, you know the x value. Plug that value in. -3(-5)+7y= 5(-5)+2y 15+7y= -25+2y Subtract 15 on both sides. 7y= -35+2y Subtract 2y on both sides. 5y=-35 Divide both sides by 5. y=-7. (-5,-7) <=== the solution. I hope this helps! ~kaikers
X= -5 -3x + 7y= 5x + 2y plug x into equation to find y -3(-5) + 7y= 5(-5) + 2y 15 + 7y= -25 + 2y subtract 2y from both sides 15 + 5y= -25 subtract 15 from both sides 5y= -40 divide both sides by 5 y= -8 CHECK: -3x + 7y= 5x + 2y -3(-5) + 7(-8)= 5(-5) + 2(-8) 15 - 56= -25 - 16 -41= -41 ANSWER: y= -8 Hope this helps! :)
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