Quadratics
What is the general form of a quadratic equation?
Name the three basic trigonometric ratios.
Sin Cos Tan
SOH CAH TOA
What is the probability of rolling a 5 on a fair six-sided die?
1/6
What is the axis of symmetry of y = (x – 2)² + 5?
x=2
In Minecraft, what material is needed to build a Nether portal?
Obsidian
Expand (x+4)(x+3)
x2+7x+12
Calculate sin 30° (to 2 d.p.)
0.50
A bag has 6 blue and 4 red balls.
What is the probability of choosing a red ball?
2/5
Is the turning point of y = –x² + 4x – 1 a maximum or a minimum?
Maximum
What is the chemical formula for carbon dioxide?
CO₂
Find the y-intercept of: y = 2x² – 5x + 7
7
A ladder 5 m long leans at a 60° angle.
How high up the wall does it reach?
4.33 m (approx.)
If P(A) = 0.4 and P(B) = 0.3 and the events are independent,
find P(A and B).
0.12
Sketch y = x² – 2x using a table of values.
What is the vertex?
(1,-1)
Who was the first person to walk on the Moon?
Neil Armstrong
Solve using the null factor law: x² – 9 = 0
x= 3 or x=-3
Find the angle of elevation if the opposite side is 12 m and the horizontal distance is 20 m.
31°
A Venn diagram shows: A = 12, B = 9, A ∩ B = 4.
How many are in A only?
8
For y = x² – 6x + 9, find the turning point and the x-intercept(s).
Turning point: (3, 0)
x-intercept: (3,0)
In The Hunger Games, what district is Katniss from?
District 12
A ball’s height is modelled by h = –5t² + 20t + 3.
Find the maximum height.
23 m
A right-angled triangle has opposite = 9 cm and adjacent = 14 cm.
Find tan θ and θ.
tan θ = 0.643, θ ≈ 33°
Flip a coin twice. What is the probability of getting exactly one head?
1/2
A quadratic has x-intercepts at –2 and 6.
Write an equation it could be.
y=(x+2)(x-6)
What state is Miss Reynolds from?
New Jersey