Oneta writes an algebraic expression with three terms. The y-term has a coefficient of -3, and the x-term has a coefficient of 1
. The expression does not have a constant term. Which expression could she have written? x minus y squared minus 3 y
x minus 3 y + 6
x + 3 y squared + 3 y
x + 3 y + 7
A) x + y = 7 B) 10y + x = 10x + y + 9 collecting terms of equation B B) -9x + 9y = 9 multiplying A) by 9 A) 9x + 9y = 63 then adding it to equation B) B) -9x + 9y = 9 18y = 72 y = 4 x = 3
