X- Intercept
y- Intercept
Vertex- Axis of symmetry
Random
Concavity
100
What are X- intercepts?
When the graph crosses the X- axis.
100
What is the y- intercept.
Where the graph intercepts with the y- axis.
100
What do you call the highest or lowest point of the parabola?
Highest: max turning point
Lowest: min turning point
100
What is the max y value of the quadratic equation below? and why?
y=3x2+5x+9
There is none as the function can go up forever.
100
Is this parabola concave up or down?
Concave Up
200
What is the y-value at the x- intercept?
Zero
200
What is x- value at the y-intercept.
zero.
200
What is the axis of symmetry?
The imaginary line that passes through the middle of the parabola and through the turning point.
(or A line the cuts a parabola into two equal halves!)
200
What is the min y value of the quadratic equation below? and why?
y=-3x2+5x+9
There is none as the function can go down forever.
200
Is this quadratic function graph concave up or down? and Why? (must explain why to win the points)
y=5X2 - 3X -10
Concave up because the coefficient of X2 is positive.
300
What are the coordinates of the x-intercept(s)?
(-1,0) and (3,0)
300
The equation of line of symmetry of a parabola: x=0
State the statement below is Ture or False? Justify your answer.
The y-intercept and turning point are the same point.
Yes, as x=0 is the y-axis and the line of symmetry must pass through the turning point. Therefore, The y-intercept and turning point are the same point.
300
What is the equation of the line of symmetry? 
(1+3)/2=2
x=2 or T=2
300
How many steps do you take to put an elephant into a fridge?
Three.
Step 1: open the fridge door.
Step 2:Chuck the elephant in.
Step 3:Shut the door.
300
Is this quadratic function graph concave up or down? and Why? (must explain why to win the points)
y=-8X2 +24X -14
Concave down because the coefficient of X2 is negative.
400
How many x-intercepts can you see in the graph below?
What the coordinate(s) of the x-intercepts?
None
400
What is the y-intercept of the following function
F(x)= 2X2 + 12X + 20.
(0,20)
400
Kevin kicked the soccer ball from mid-field to the goal. The height(m) of the ball can be described by the equation h=-3X2 +12. Does this function have a maximum or a minimum height? What would that be?
Maximum. 12 metres
400
Marvin kicked the soccer ball and the height (m) of the ball can be given by h(t)=-16t2+80t+384 , in t seconds. What is the height when after 6 seconds?
288 m
400
Is this quadratic function graph concave up or down? and Why? (must explain why to win the points)
y=-8X2 +24X2 -14X+5X-98451
Concave up because after simplifying the equation the coefficient of X2 is positive (16)
500
Which of the following has no root (x-intercepts)?
Which of the following has one root?
Which of the following has two roots?
A: y=5X2+3
B: y=5X2
C: y=5X2 -8
D: y=-3X2 -8
E: y=X2
No root: A and D
One root: B and E
Two root: C
500
What is the y-intercept for the following:
F(x) = (2X-3)(5X+2)?
(0,-6)
500
What is the turning point of the function?
F(x)= X2 +2X+1
(-1,0)
500
In the recent animal community meeting, all animals attended except for one animal. Who is the absent animal.
Elephant, as that poor animal is still in Mr Kang's fridge.
500
Is this quadratic function graph concave up or down? and Why? (must explain why to win the points)
y=(2x-9)(18-4x)+2X2
Concave down because after expanding and simplifying the equation the coefficient of X2 is negative (-8)