Answer: (0,-3)
Explanation:
1. parabolic equations are in the for y=ax^2+bx+c
2. To find the vertex, we need to find the axis of symmetry, which is basically the x value of the vertex
3. The formula for this is -b/2a
4. in this problem, there is no b, so it would be -0/2, or just 0
5. The axis of symmetry (aos) is 0.
6. Now we substitute the aos (x value) into the function where we see x
7. y=0-3, or y=-3
8. The answer is (0,-3)
Although this says to use graphing software, use this formula. It will help you in the long run, and you can surprise your teacher!