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Which of these is the solution to the system of equations? Y=12x-18 Y=13x-18 Is it a. (-18,0) B. (0,-18) C. (1,-6) D. (1,-5)
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3 votes
Which of these is the solution to the system of equations?

Y=12x-18
Y=13x-18

Is it a. (-18,0)
B. (0,-18)
C. (1,-6)
D. (1,-5)

User Ruchita
by
8.8k points

1 Answer

3 votes
The best way to solve is by elimination.
First, write the equations in standard form.
12x-y=18
13x-y=18
Multiple the bottom equation by -1
12x-y=18
-13x+y=-18
Add.
-x=0
x=0 Plug into other equation
12(0)-y=18
0-y=18
-y=18
y=-18
Your answer is B. (0,-18)
User Daniel Mensing
by
8.4k points
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