Functions
What is the output of y = x + 2 when x = 3?
5
What is the independent variable in a table?
x (the input)
A job pays $10 per hour. How much for 1 hour?
$10
What shape has a formula V = πr²h?
Cyliner
What is the volume formula for a cone?
V = 1/3 × π × r² × h
What is the output of y = -5x + 4 when x = 0?
4
What is the dependent variable in a function table?
y (the output)
A student earns $9.50/hour. How much for 2 hours?
$19
Find volume if radius = 2, height = 3 (use π = 3.14).
37.68cm3
If r = 2in and h = 3in (π = 3.14), find volume.
12.56 in3
If y = x - 10 and x = -3, what is y?
-13
Complete the table: x = 0, 1, 2 → y = x – 10
y = -10, -9, -8
What is the bonus pay if the student gets $100 just for signing up?
$100
What’s the radius in a cylinder with diameter 6?
3
What does "⅓" mean in the cone formula?
You take 1/3 of the cylinder’s volume
What’s the function rule if the inputs are 1, 2, 3 and the outputs are 4, 5, 6?
y = x + 3
What is the rule if x = 0, 1, 2 and y = 2, 4, 6?
y = 2x
How much will a student make in 3 hours with a $100 bonus?
y = 40x + 100
$220
A cylinder has radius 4cm, height 5cm. Find volume. (use π = 3.14)
251.2cm3
Find volume if radius = 3cm, height = 6cm. (π = 3.14)
56.52 cm3
If the rule is y = x + 9 and y = 12, what is x?
3
ou have a function where y = x × x. What is y when x = 4?
16
Write an equation to represent total earnings (E) with hours (h):
Annika is working as a Starbucks Barista. She makes $22 an hour. Starbucks gave Annika a $50 holiday bonus!
E = 22h + 50
A cylinder has radius 2cm, height 10cm. What is the volume? (use π = 3.14)
125.6 cm3
A cone has diameter 6m, height 4m. Find volume (π = 3.14).
37.68m3