Instructions: Find the line of symmetry of each quadratic function.

Remember, the line of symmetry for a quadratic function, *y* = *ax*^{2} + *bx* + *c* is

x= -b/2a.

How to find the line of symmetry.

Original quiz without answers.

1. *y *= 100*x*^{2} + 10*x* + 5*x* = -1/20

2. *y *= -100*x*^{2} + 10*x +* 5*x *= 1/20

3.* **y *= 12*x*^{2} -2*x + *144* x = *

**1/12**

4. *y *= *x*^{2} + 5*x *- 1*x* =-5/2

5. *y *= -2*x*^{2} -16*x + *16* *

*x*=-46. *y *= 49*x*^{2} + 84*x +* 36*x* =6/7

7. *y *= 121*x*^{2} -198*x *-81*x* =-9/11

8.* **y *= 25*x*^{2} + 30*x + *9*x* =-3/5