Question

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y = 2x + 3
y = 4x - 3
is (3, 9) a solution of the system?
choose 1 answer:
a yes
b no

Explanation:

Step1: Test first equation with $x=3$

Substitute $x=3$ into $y=2x+3$:
$y=2(3)+3=6+3=9$

Step2: Test second equation with $x=3$

Substitute $x=3$ into $y=4x-3$:
$y=4(3)-3=12-3=9$

Step3: Compare to given $y$-value

The calculated $y=9$ matches the given $y$-value in $(3,9)$ for both equations.

Answer:

A. Yes