Linear Equation Word Problems in Slope Intercept Form

Sonya has $40 in her lunch account and pays $2 each day to eat lunch. Which equation can be used to find the amount of money Sonya has left on her account after x days?

• y = 40 + 2x

• y = - 2x + 40

• y = 2 + 40x

• y = 2 - 40x

A man is climbing down from 100 feet high descending 30 feet per minute.

• y = - 30x + 100

• y = 100 + 30x

• y = 100x + 30

• y = 100x - 30

Sandra has a $20 itunes gift card and spends $3 each month.  Which equation can be used to find how much money Sandra has on her giftcard after x months?

• y = 3x + 20

• y = 3 + 20x

• y = -3x + 20

• y = -20x + 3

In order to join an online learning community, there is a $20 startup fee and a $5 monthly fee. Write an equation in slope-intercept form that models this situation.

• y = 20x + 5

• y = 5x +20

A canoe rental service charges a $20 transportation fee and $30 dollars an hour to rent a canoe. Write an equation representing the cost, y, of renting a canoe for x hours.

• y = 30x + 20

• y = 30 + 20x

• y = 50x

• y = 60x

From the problem, what is the y-intercept and what does it represent

• 1.40

  The cost of a hamburger

• 1.90

  The cost of each topping

• 1.40

  The cost of each topping

• 1.90

  The cost of a hamburger

Given the problem in the box below, what is the slope and what does the slope represent?

Based on the function, if Xzavier paid $3.30 for a hamburger, how many toppings were on his burger?

• 1

• 2

• .5

• 3

Based on the function, what is the y-intercept and what does it mean?

• $5

  The cost of the fair

• $1.75

  The cost of the fair

• $1.75

  The cost per ride

• $5

  The cost per ride

Based on the function, if Braxton spent $19 at the fair, how many rides did he ride?