For the given system of equations, which method would be the most efficient method to use when solving the system of equations: substitution, addition, or either?
-$y=-\frac{1}{2} x-5$
$3 \mathrm{x}+7 \mathrm{y}=19$
A) addition
B) substitution
C) either

Question

Quizplus · Accepted Answer

The first equation is already solved for y, making substitution the most efficient method to solve the system.

For the Given System of Equations, Which Method Would Be y=−12x−5y=-\frac{1}{2} x-5y=−21​x−5

For the Given System of Equations, Which Method Would Be $y=-\frac{1}{2} x-5$