00:01
There's actually a lot of ways you can approach this problem and be able to get the right answer.
00:07
But we have this vertex at negative 1, 2, and we have this y intercept of 3, which in case you didn't know, the y intercept is when x equals 0.
00:20
And they don't even tell you how to write the equation.
00:26
You know, because what you could do is you could just do it in vertex form, and you could just write that your answer would be y equals x plus 1 squared, and then plus 2, because that's where the vertex is, the opposite of the x coordinate.
00:48
I don't even jot that down.
00:50
And then the same as this.
00:52
Now, what your answer does, or what my answer, i guess, is i didn't account for the a value here, but i'll tell you that a needs to equal one.
01:01
And a quick reason is because if you plug in zero for x, so let me do that real quick, 0 plus 1 squared and add 2 to it, what you'll see is i get the y value of 3, which is correct.
01:16
So that's why you don't even need that a value in front...