If 3x + 4y = –5 and –2x – 5y = 8, what is the value of y?

A. –2

Explanation

Line up the two equations. Since the question asks for the value of y, eliminate x. Multiply the first equation by 2 to get 6x + 8y = –10 and second equation by 3 to get –6x –15y = 24. Add the two equations to get –7y = 14. Divide by –7 to get y = – 2 

Visit our website for other GED topics now!