Quadratic Graphs Quiz

1. What is the line of symmetry of $y=x^2-8x+12$?

• A. $x=4$
• B. $x=-4$
• C. $x=8$
• D. $x=2$

2. Which shape does $y=-3x^2+2x+1$ produce?

• A. U-shaped, minimum turning point
• B. ∩-shaped, maximum turning point
• C. A straight line
• D. An exponential curve

3. Complete the square for $y=x^2+4x+9$ and state the turning point.

• A. $(x+2)^2+5$, turning point $(-2,5)$
• B. $(x+2)^2+9$, turning point $(-2,9)$
• C. $(x-2)^2+5$, turning point $(2,5)$
• D. $(x+4)^2+5$, turning point $(-4,5)$

4. Where do $y=x^2$ and $y=x+2$ intersect?

• A. $(2,4)$ and $(-1,1)$
• B. $(2,4)$ only
• C. $(1,1)$ and $(-2,4)$
• D. $(-1,1)$ only

5. A ball's height is modelled by $h=-5t^2+20t$. What is the maximum height reached?

• A. 20
• B. 5
• C. 10
• D. 15