What is the solution of the system of equations?y = 2x - 35x + y = 11A (2, 1)B (1, 2)C (3, -4)D (1, -1)

Lipossig

Lipossig

Answered question

2021-02-20

What is the solution of the system of equations?
y=2x3
5x+y=11
A(2,1)
B(1,2)
C(3,4)
D(1,1)

Answer & Explanation

Isma Jimenez

Isma Jimenez

Skilled2021-02-21Added 84 answers

Let:
y=2x3 (1)
5x+y=11 (2)
Solve by substitution. Substitute (1) to (2) and solve for x:
5x+(2x3)=11
7x3=11
7x=14
x=2 

Solve for yy using (1):
y=2(2)3
y=1
So, the solution of the system is:
(2,1)
which is choice A.

Jeffrey Jordon

Jeffrey Jordon

Expert2021-08-10Added 2605 answers

Answered on video

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