HURRY Dox needs to solve the system of equations
below.
4x + 5y = 7
2x - 3y = 9
He decides to use the elimination method to
cancel out the x terms in order to first solve for y.
Dox uses the following steps:
Step 1: 4x + 5y = 7
-2(2x) - 3y = 9
Step 2: 4x + 5y = 7
-4x - 3y = 9
Step 3: 2y = 16
Step 4: y = 8
Did Dox use the correct steps to solve for y?
A. Yes, Dox correctly solved for y.
B. No, Dox should have multipled 2x by 2 instead of
by-2.
C. No, Dox should have multiplied the entire
second equation by -2.
D. No, Dox should have multiplied the entire
second equaiton by -4