Blanche needs to solve the system of equations below. 4 + 4 = −7 −12 − 3 = −24
She decides to use the elimination method to cancel out the “x” term in order to first solve for “y”. Blanche uses the following steps:
Did Blanche use the correct steps to solve for “y”?
Step 1.
Step 2.
Step 3. Step 4.
3(4) + 4 = −7 −12 − 3 = −24
12 + 4 = −7 −12 − 3 = −24
= −31
So then = −31
A) No, Blanche should have multiplied the entire second equation by -2
B) No, Blanche should have multiplied 3x by -4 instead of by 4.
C) No, Blanche should have multiplied the entire first equation by 3
D) Yes, Blanche correctly solved for “y”.