Hector knows there is a relationship between the number of cars he washes and the time it takes him to wash those cars. Identify the independent quantity and the dependent quantity in the problem situation.
I) the amount of time it takes to wash each car
Determine whether each relationship represents a function. Explain your reasoning.
NO - explanations may vary
Identify the domain and range (include units)

D) time (minutes)
R)distance from home (miles)
True or False: Does a linear function have a constant rate of change?
True!
which is a constant function

a
Angela’s grandfather gave her all the cash he had in his pocket to buy raffle tickets that cost $1 each for her cheerleading fundraiser. Identify the independent quantity and dependent quantity in the problem situation.
D) amount of raffle tickets purchased
I) amount of money angela has
Determine whether each relationship represents a function. Explain your reasoning.
yes - explanations may vary
identify the domain and range

D) 2, 3, 4
R) -1, 1
Which graphs has a straight line. Choose all that apply
linear functions
constant functions
quadratic functions
exponential functions
linear absolute value functions
Linear functions
Match the function to its graph


d
Brie knows there is a relationship between the grades on her math tests and the time she spends studying for those tests. Identify the independent quantity and the dependent quantity in this problem situation
D)grade on math test
I) amount of time spent studying
Determine whether each relationship represents a function. Explain your reasoning.

yes explanations will vary
Michelle incorrectly says that this is not a function because the -1 repeats. Explain why she thinks this (use the terms domain and range in your answer)

What are the 3 names you that can also mean the x value?
Domain
Independent variable
input
When given a point and a slope are you able to find the y intercept? If so, how?
Yes you can!
plug in your points (x,y) and your slope (m) into
y=mx+b to solve for b!
David rode his bike to the park. After staying at the park for a while, he continued his ride to the grocery store. The graph shown represents this situation. Identify the independent and dependent values - include units in your answer.
D)distance from house (miles)
I) time(in min)
Determine whether each relationship represents a function. Explain your reasoning.

no explanations will vary
what is the domain?
(1,2), (0,4), (5,6), (-1,3)
1,0,5,-1
What is the definition of a relation?
A set of coordinate points
which is a linear function?

a
Grissom draws different sized spheres in a notebook. He knows there is a relationship between the volume of the sphere and the length of its diameter. What is the independent quantity in the situation?
a. surface area of the sphere
b. length of the diameter
c. volume of the sphere
d. number of spheres Grissom draws
b. length of the diameter
Determine whether each relationship represents a function. Explain your reasoning.

no explanations will vary
what is the range?
(7,8), (9,0), (4,-3), (2,5)
8,0,-3,5
Is a relation always a function? Explain
No!
A function is always a relation, but a relation is not always a function because you can have multiple outputs for every input in a relation
Heath has 10 pennies in his piggy bank initially. He adds 5 pennies every day in his piggy bank each day for five days. Which graph correctly represents the scenario. Lablel the x and y axis (include units)

graph 1
x axis = time (in days)
y axis = number of pennies