Question

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to y from the first equation is substituted into the second equation. 12x − y = −4 4x − 3y = −6 a 4x − 3(−12x − 4) = −6 b 4x − 3(12x + 4) = −6 c 4(12x + 4) − 3y = −6 d 4(−12x − 4) − 3y = −6

Answer 1

b

Explanation:

From eqn 1

12x - y = - 4

y = 12x + 4

Substituting y into eqn 2

4x - 3y = - 6

4x - 3(12x + 4) = - 6