Slope and Y Intercept in Multiple Representations

Find the slope

• 4/5

• 5/4

• -5/4

• -4/5

Mrs. Hartshorn uses the formula y = -3x + 27 to keep track of how much money she has in her coffee fund each day (she buys one coffee each day). x is the number of days and y is the amount of money in her coffee account. What would the 27 represent in the story?

• What she pays for each coffee

• The rule

• How much money she starts with in her fund

• It means nothing. Mrs. Hartshorn just likes the number 27.

Find the slope

• 7/3

• 3/7

• -3/7

• -7/3

What is the slope in the picture?

• Positive

• Negative

• Zero

• Undefined

Alex has $150 in his bank account. Each week he is going to add $15 that he earns for babysitting his sister. The y intercept in the story is.

• -150

• 15

• -15

• 150

Mrs. Hartshorn uses the formula y = -3x + 27 to keep track of how much money she has in her coffee fund each day (she buys one coffee each day). x is the number of days and y is the amount of money in her coffee account. What does the -3 represent in the story?

• The cost of each coffee

• What she started with in her coffee fund.

• The rule

• It means nothing. Mrs. Hartshorn just likes the number -3.

What does the m represent?

• Slope

• y-intercept

• x coordinate

• y coordinate

What does the b represent?

• Slope

• y-intercept

• x coordinate

• y coordinate

What is the slope of the line?

What is the slope of the line?