Linear Functions and Word Problems

Which of these tables are NOT a function?

• Table starting with -2

• Table starting with 5

• Table starting with 3

• Table starting with -8

What do we eliminate in word problems?

• question

• unnecessary information

• numbers

• keywords

Jerry has $20 and makes $7 per hour. Which equation represents the total amount of money Jerry has after working x hours?

• y = 7x + 20

• y = 7 + 20x

• y = 20 + 7

Lee charges $3 for a basket and $2.50 for each pound of fruit picked at the orchard. Write an equation in y = mx + b form for the total cost of x pounds of fruit from the orchard.

• y = 3x + 2.5

• y = 2.50x + 3

• y = 2.50x 

• y = 3x + 2.50

• A

• B

• C

• D

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• 
• 
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Tags

A.2(C)

• A

• B

• C

• D

Yaleen adds songs to her spotify playlist. If her playlist already has 500 songs, and she adds 3 songs per day. write a linear function

Mathematical Equivalence

ON

T-mobile charges a base rate of $30 per month for unlimited text plus $.10/ minute of talk time. Write the function for monthly cost for x minutes. ​ (a)   what is the independent variable ​ (b)   what is the dependent variable ​ (c)  

• f(x)=20 + .10x

• f(x)= .10 + 30x

• f(x)= 30x + $.10x

• f(x)=30+ $.10x

• minutes

• cost

At a restaurant jars of tomato sauce are stored in boxes in the pantry. Each box contains 8 jars of tomato sauce. A cook uses 2 jars from 1 of the boxes. Write the function that shows the relationship between y, the total number of jars of tomato sauce remaining in the pantry, and x, the number of boxes in the pantry.

Mathematical Equivalence

ON