Instructions: Find the line of symmetry of each quadratic function.
Remember, the line of symmetry for a quadratic function, y = ax2 + bx + c is
x = -b/2a.
How to find the line of symmetry.
Original quiz without answers.
1. y = 100x2 + 10x + 5
x = -1/20
2. y = -100x2 + 10x + 5
x = 1/20
3. y = 12x2 -2x + 144
x = 1/12
4. y = x2 + 5x - 1
x =-5/2
5. y = -2x2 -16x + 16
x =-4
6. y = 49x2 + 84x + 36
x =6/7
7. y = 121x2 -198x -81
x =-9/11
8. y = 25x2 + 30x + 9
x =-3/5