x |
y=(3/4)x^2 |
(x,y) |
-1 |
0.75 |
(-1,0.75) |
0 |
0 |
(0,0) |
1 |
0.75 |
(1,0.75) |
For a quadratic (parabola) it's important to include the vertex, which is (0,0) here.
It's important to show that negative x gives the same value for y as the corresponding positive value of x. Adding points (-2,3) (2,3) would help to show the spread of the parabolic arms. This demonstrates the symmetry as well as the shape.