Question

solve the system by substitution.
$y = 4x$
$y = 8x - 36$

Explanation:

Step1: Substitute $y=4x$ into second equation

$4x = 8x - 36$

Step2: Isolate $x$ terms

$36 = 8x - 4x$

Step3: Simplify and solve for $x$

$36 = 4x \implies x = \frac{36}{4} = 9$

Step4: Substitute $x=9$ into $y=4x$

$y = 4 \times 9 = 36$

Answer:

$(9, 36)$