00:01
This problem asked us to determine if this ordered pair negative 5 -9 is a solution to the system of linear equations given by these two equations.
00:12
So as always, we're looking to see if the x and y of this ordered pair, if we put those values in, does it make both of these equations true? if it only makes one of them true or makes neither of them true, it won't be a solution.
00:29
So keep that in mind as we start here.
00:31
So everywhere i see an x, i can plug in a negative 5.
00:35
So we'll do that here.
00:37
And y is equal to 9.
00:40
So make those two substitutions.
00:42
5 times negative 5 is a negative 25 plus 3 times 9 is a 27.
00:48
So that's equal to 2.
00:50
Negative 25 plus 27 is 2.
00:53
So 2 is equal to 2...