Translating Real World Situations into Slope Intercept Form

A car rental company charges a flat fee of $50 plus $20 per day for renting a car. Write the equation in slope-intercept form for the total cost (y) in terms of the number of days (x).

• y = 20x - 50

• y = 20x + 50

• y = 50x + 20

• y = 20 + 50x

A phone plan charges a flat fee of $30 plus $0.05 per minute for calls. Write the equation in slope-intercept form for the total cost (y) in terms of the number of minutes (x).

• y = 0.05 + 30x

• y = 0.05x + 30

• y = 30x + 0.05

• y = 0.30x

A taxi company charges a flat fee of $5 plus $2.50 per mile for a ride. Write the equation in slope-intercept form for the total cost (y) in terms of the number of miles (x).

• y = 5x + 2.50

• y = 2.50x + 5

• y = 2.50x - 5

• y = 5x - 2.50

A tutoring service charges a flat fee of $40 plus $15 per hour for tutoring. Write the equation in slope-intercept form for the total cost (y) in terms of the number of hours (x).

• y = 25x + 40

• y = 15x - 40

• y = 40x + 15

• y = 15x + 40

Mathematical Equivalence

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Mathematical Equivalence

ON

A delivery service charges a flat fee of $20 plus $5 per package for delivery. Write the equation in slope-intercept form for the total cost (y) in terms of the number of packages (x).

• y = 20 + 5x

• y = 20x + 5

• y = 5x - 20

• y = 5x + 20

A cleaning service charges a flat fee of $60 plus $12 per hour for cleaning. Write the equation in slope-intercept form for the total cost (y) in terms of the number of hours (x).

• y = 12x + 60

• y = 60x + 12

• y = 12x - 60

• y = 60x - 12

A landscaping company charges a flat fee of $80 plus $30 per hour for landscaping services. Write the equation in slope-intercept form for the total cost (y) in terms of the number of hours (x).

• y = 80 + 30x

• y = 30x - 80

• y = 80x + 30

• y = 30x + 80

A pet sitting service charges a flat fee of $25 plus $8 per day for pet sitting. Write the equation in slope-intercept form for the total cost (y) in terms of the number of days (x).

• y = 25 + 8x

• y = 8x + 25

• y = 25x + 8

• y = 8x - 25