8.5.I Write An Equation In The Form y = mx + b To Model A Linear Relationship

Quiz by Texas Education Agency

Mathematics
Texas Essential Knowledge and Skills (TEKS)

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### Measures 1 skill fromGrade 8MathematicsTexas Essential Knowledge and Skills (TEKS)

8.5.I: Proportionality

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6 questions
• Q1
Which equation can be used to describe the relationship between x and y shown in the graph below?
y = 3x+ 2
y = -3x+ 2
y= -3x -6
y= 3x -6
60s
8.5.I: Proportionality
• Q2
60s
8.5.I: Proportionality
• Q3
Mr. Leonard is renting a car for one day. The table below shows the total amount he will be charged for the car based on the number of miles he drives. Which equation best represents c, the number of dollars Mr. Leonard should be charged for driving m miles?
c = 30m + 0.10
c = 30m + 0.50
c = 0.50m + 30
c = 0.10m + 30
60s
8.5.I: Proportionality
• Q4
Frankie bought a new computer. He made an initial payment of $50 to the store, and he will pay$30 each month until the computer is paid off. Which equation represents the relationship between m, the number of monthly payments Frankie has made, and t, the total amount that Frankie has paid the store?
t = 50m - 30
t= 30m + 50
t= 50m + 30
t = 30m - 50
60s
8.5.I: Proportionality
• Q5
60s
8.5.I: Proportionality
• Q6
Melissa is saving $25 that she earned for washing her mom’s car. She earns$10 every week for doing chores, which she also saves. Which function can be used to find t, the amount of money Melissa will have saved at the end of n weeks of doing chores?
t = 25n + 10
t = 10n + 25
t = 15n
t = 35n
60s
8.5.I: Proportionality

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