Question

$3x - 4y = -5$
$y = 4x - 2$
is $(1, 2)$ a solution of the system?
choose 1 answer:
a yes
b no

Explanation:

Step1: Test $(1,2)$ in second equation

Substitute $x=1, y=2$ into $y=4x-2$:
$2 = 4(1)-2 = 4-2=2$ (True)

Step2: Test $(1,2)$ in first equation

Substitute $x=1, y=2$ into $3x-4y=-5$:
$3(1)-4(2)=3-8=-5$ (True)

Answer:

A. Yes