Question

NEED HELP FAST!
3.
Jill wants to solve the following system using the elimination method:

y = x + 8
y = 3x – 11

What number should the equation y = x + 8 be multiplied by to eliminate x? (4 points)



–1

–2

–3

3

Answer 1

$\left\{\begin{array}{ccc}y=x+8&|\cdot(-3)\\y=3x-11\end{array}\right\\\underline{+\left\{\begin{array}{ccc}-3y=-3x-24\\y=3x-11\end{array}\right}\ \ \ |\text{add both sides of equations}\\.\ \ \ \ \ -2y=-35\\\\\text{Answer:}\ -3$