Question

question
solve the system by substitution.
$y = 9x$
$y = 3x + 12$
answer attempt 1 out of 2
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Explanation:

Step1: Substitute $y=9x$ into second equation

$9x = 3x + 12$

Step2: Isolate $x$ term

$9x - 3x = 12$
$6x = 12$

Step3: Solve for $x$

$x = \frac{12}{6} = 2$

Step4: Substitute $x=2$ into $y=9x$

$y = 9\times2 = 18$

Answer:

$(2, 18)$