Curves:
quadratic
Choose values for a, b and c and observe the values of
y = ax
2
+bx+c
a =
b =
c =
x
-4
-3
-2
-1
0
1
2
3
4
ax
2
bx
c
ax
2
+bx+c
Use this table to solve:
x
2
+2x+1 = 1
x=
x
2
+3x+2 = 0
x=
x
2
+3x-2 = 2
x=
2x
2
- 2x = 0
x=
2x
2
-4x-6 = 0
x=
Here is a plot of some points from a quadratic equation.
