Mathematics

Quadratic Functions

Grade 9 · Middle School

Answer every question first, then press Finish to see your score and explanations.

Question 1 of 20Easy
The axis of symmetry of $y = x^{2} - 4 x + 3$ is ...
Question 2 of 20Easy
The vertex of the graph of $y = x^{2}$ is ...
Question 3 of 20Easy
The graph that opens downward is ...
Question 4 of 20Easy
The y-intercept of the graph of $y = x^{2} - 1$ is ...
Question 5 of 20Easy
If $f (x) = x^{2} - 3 x$ , the value of $f (2)$ is ...
Question 6 of 20Easy
The vertex of the graph of $y = (x - 2)^{2} + 3$ is ...
Question 7 of 20Medium
The vertex of the graph of $y = x^{2} - 6 x + 5$ is ...
Question 8 of 20Medium
The graph of $y = x^{2} - 4 x + 3$ cuts the x-axis at ...
Question 9 of 20Medium
The discriminant of $y = 2 x^{2} - 3 x + 1$ is ...
Question 10 of 20Medium
The axis of symmetry of $y = 2 x^{2} + 8 x - 1$ is ...
Question 11 of 20Medium
The number of intersection points of $y = x^{2} + 2 x + 5$ with the x-axis is ...
Question 12 of 20Medium
The vertex of the graph of $y = - x^{2} + 4 x$ is ...
Question 13 of 20Medium
The minimum value of $y = x^{2} - 2 x + 7$ is ...
Question 14 of 20Medium
The graph of $y = (x - 1)^{2} - 4$ cuts the x-axis at ...
Question 15 of 20Hard
The height of a ball (in meters) after $t$ seconds is $h = - 5 t^{2} + 20 t$ . The maximum height is ...
Question 16 of 20Hard
A quadratic graph passes through $(0, 3)$ , $(1, 0)$ , and $(3, 0)$ . The function is ...
Question 17 of 20Hard
The graph of $y = x^{2} - 2 m x + m + 2$ always lies above the x-axis. The values of $m$ are ...
Question 18 of 20Hard
The function $y = x^{2} - 6 x + k$ has a minimum value of 1. The value of $k$ is ...
Question 19 of 20Hard
The function $f (x) = x^{2} + b x + c$ has vertex $(3, - 4)$ . The value of $b + c$ is ...
Question 20 of 20Hard
The sum of two numbers is 20. The maximum product of the two numbers is ...

0/20 answered