00:01
In this problem, you're given the equation, x squared plus y squared is equal to 4, and we want to figure out which, if any, of the three points are on the graph.
00:08
Well, in order to be on the graph, that means when we substitute the x and y values into our function, that would make a true statement.
00:14
So we'll start with the first order pair, 0 negative 2, which means x is 0 and y is negative 2.
00:19
So we're going to substitute those in, which means we'll have 0 squared plus negative 2 squared, and we need to see if it's equal to 4.
00:25
Well, 0 squared is just 0, negative 2 squared is positive 4, and 0.
00:30
0 plus 4 is 4.
00:31
So that means because 4 is equal to 4, 0 negative 2 is in fact on the graph of that function.
00:38
Now let's try our next order pair, 2 negative 2.
00:40
So that means x is 2, so we have 2 squared, plus y, which is negative 2 squared, equal to 4...