Question

Solve the given system, using the substitution method.

y = 3x – 4
9x – 3y = 14


A.
There is no solution.

B.
(12, 14)

C.
(14, 12)

D.
There are an infinite number of solutions.

Answer 1

A

Answer 2

\(\bf {\color{red}{ y}} = 3x - 4\\
9x - 3y = 14
\\ \quad \\
9x - 3y = 14\implies 9x - 3({\color{red}{ 3x - 4}}) = 14\)

solve for "x"
once you found "x", substitute on either equation and solve for "y"

Answer 3

the lines are parallel if you graph it