Graphing Quadratics from Standard Form Worksheet | PDF

Answer Key

1. Axis $x=-2$; Vertex $(-2,-1)$; y-int. $(0,3)$; upward
2. Axis $x=3$; Vertex $(3,-4)$; y-int. $(0,5)$; upward
3. Axis $x=-1$; Vertex $(-1,-9)$; y-int. $(0,-8)$; upward
4. Axis $x=2$; Vertex $(2,9)$; y-int. $(0,5)$; downward
5. Axis $x=2$; Vertex $(2,-2)$; y-int. $(0,6)$; upward
6. $y:0,-3,-4,-3,0$
7. $y:0,3,4,3,0$
8. $y:0,-6,-8,-6,0$
9. Vertex $(4,-4)$; axis $x=4$
10. Downward
11. Vertex $(1,-12)$; y-intercept $(0,-9)$
12. $a>0$: upward; $a<0$: downward. Larger $\mathrm{\mid }a\mathrm{\mid }$ makes the parabola narrower; smaller $\mathrm{\mid }a\mathrm{\mid }$ makes it wider.