Slope Intercept Word Problems

Which of the following situations could be descried by the equation y=120-25x?

• There are 120 people in the football stadium, and 25 more are entering each hour.

• A plumber charges $25 for a house call and $120 per hour.

• A teacher has 120 students. Her third period has 25 students

• There are 120 gallons of water in a tank. It releases water at a rate of 25 gallons per minute

The equation below represents an elevator's height after an amount of seconds. Using this equation, what should the height of the elevator be after 14 seconds?
h(s) = -3.8s + 290

• 80

• 236.8

• -80

• 72.6

Jackson started with $800 in his savings account, but has to pay $30 a month for his electricity bill. Write an equation that relates his savings, y, to the amount of months, x.

• y = -30x + 800

• y = 30x - 800

• y = -30x

• y = 12x - 30

Tags

CCSS.6.EE.C.9

Stephanie owes her mom $80 for a recent trip to the mall. She plans to payback $15 a month until it is paid back. Write an equation in slope-intercept form that relates the amount she owes, y, to the amount of months, x.

• y = 15x - 80

• y = 15x + 80

• y = -15x + 80

• y = -15x - 80

a line that slants down from left to right, or downhill

• zero or no slope

• negative slope

• postivite slope

• undefined slope

Tags

CCSS.8.EE.B.5

a line that slants down from left to right

• zero or no slope

• negative slope

• postivite slope

• undefined slope

Tags

CCSS.8.EE.B.5

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.

As the x value increases, the y value decreases. The line starts at the top left and goes toward the bottom right.

• Nonproportional

• Proportional

• Slope Intercept Form

• Negative slope

Tags

CCSS.8.EE.B.5

What is the letter that represents slope?

• y

• b

• m

• x

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is the equation for the table above?

• y = -3x + 20

• y = 3x + 20

• y = -1/3x + 20

• y = 6x - 2

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2