Question

How do you solve for `y` if `y= - 3x +2` when `x = -1` and `x=4`?

Answer 1

`y=5 and y=-10`

Explanation:

When it comes to 2 variable linear equations, it's as simple as plugging in the given values and following the order of operations. In this case, you are given two `x` values and are asked to solve for `y`.

First, you'll take one of your given values (`x=-1`) and plug it into the first formula, which is already solved for `y` (`y=-3x+2`).

`y=-3(-1) + 2`

Then follow the order of operations, remembering that two negatives equal a positive when multiplied.

`y=3 + 2`
`y = 5`

Repeat the steps for the first 2nd given value (`x=4`).

`y=-3(4) + 2`
`y=(-12) + 2`
`y=-10`

Hopefully this helps!