00:01
Here we're looking at a system of linear equations and checking if the given ordered pair is a solution to them.
00:09
So we'll start out by just writing down our ordered pair here, which was negative 4 comma negative 1.
00:16
So we know that our x equals negative 4 and our y equals negative 1.
00:21
Now we can plug it into our system of equations to check if the equalities work.
00:26
So it's negative 5 times x or x is negative 4.
00:29
So we plug that in there.
00:32
And then it's plus a y or y is negative 1.
00:36
So we plug that into there.
00:38
And that is supposed to equal 19.
00:39
So we can check that right here.
00:41
So negative 5 times negative 4 gives us positive 20 because negative times a negative gives you a positive.
00:47
And then we're subtracting 1 from it.
00:49
And that is supposed to equal 19...