A plumber charges a flat fee for each job, plus an hourly rate for the number of hours the job takes to complete. The cost of the job, in dollars, can be modeled by the expression y = 65x + 50. What is the y-intercept in the expression represent in this situation and what does it represent.

Linear Equations

Quiz
•
Mathematics
•
9th Grade
•
Hard

Kevin Kearns
Used 1+ times
FREE Resource
26 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
the number of jobs, x
the cost per hour, $65
the cost per hour, $50
the flat fee, 50
the total cost of the job, y
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
A plumber charges a flat fee for each job, plus an hourly rate for the number of hours the job takes to complete. The cost of the job, in dollars, can be modeled by the expression y = 65x + 50. What is the rate of change (slope) in the expression and what does it represent in this situation.
the flat fee, $65
the number of hours to complete the job, x
the cost per hour, $65
the flat fee, $50
the total cost of the job, y
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the slope of the following graph?
m = 80
m = 20
m = 40
m = 160
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The graph shows the amount of gas a tractor uses given the number of miles traveled. What does the slope tell you?
1/20 of a gallon of gas in increased every mile driven.
1/20 of a gallon of gas is used every mile driven.
4 gallons of gas is increased every mile drive.
5 gallons of gas is used every mile driven.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The graph shows the amount of gas a tractor uses given the number of miles traveled. What does the y-intercept tell us?
That the tractor traveled 40 miles.
How much gas the tractor started with.
After 60 miles the tractor had 1 gallon of gas.
1/20 of a gallon of gas is used every mile.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The graph shows the cost of candy as a function of the weight of the candy. Calculate the slope.
$2.66 for every ounce of candy bought
$3 for every ounce of candy bought
$0.50 for every ounce of candy bought
$0.38 for every ounce of candy bought
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The table shows the cost of a taxi, given the number of miles traveled. Calculate the slope and explain the meaning.
The taxi charges $0.30 for every mile traveled.
The taxi charges $1.00 for every mile traveled.
The taxi charges $1.30 for every mile traveled.
The taxi charges $2.50 for every mile traveled.
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