Question

What is the substitution for the equation

Answer 1

Answer:

$y=3x$ (Equation 1)

$y=x-2$ (Equation 2)

We can substitute Equation 1 into Equation 2 like so:

$y=x-2$

$3x=x-2$

Subtract x from both sides:

$2x=-2$

Divide both sides by 2:

$x=-1$.

Substitute $x=-1$ into Equation 1 to find y:

$y=3x$

$y=3(-1)$

$y=-3$