00:01
Solve each equation for y, then find the value of y for each value of x.
00:05
We're going to solve the equation for y.
00:09
So i want to get y by itself, so i'm going to box my y, so i know what to isolate.
00:15
First thing i'm going to do is subtract x on both sides.
00:20
That allows this x to cancel, and i'm only left with negative 4y.
00:25
There's a negative sign here or a minus sign that needs to come down, because we didn't alter that in any way.
00:30
So we write negative 4 minus x.
00:35
They're not like terms, so we do not combine them.
00:38
Our next step would be to isolate y again, so i'm going to put my little box.
00:43
And i'm going to divide by negative 4 for every single thing in the equation.
00:50
That allows these negative 4s to cancel, and i am left with y equals negative 4 divided by negative 4 is 1.
00:58
This is really a 1 up here.
01:00
So negative 1 divided by negative 4 is positive...