Week 6 - Interpreting Slope and Y-intercept

Janice is saving money for retirement. The equation y = 500x + 12,000 models her retirement savings where y is the total she has saved in dollars, and x is the number of months.

Interpret the y-intercept.

• Janice started with $500 in her account

• Janice started with $12,000 in her account

• Each month, Janice saves an additional $500

• Each month, Janice saves an additional $12,000

Tags

CCSS.HSS.ID.C.7

Janice is saving money for retirement. The equation y = 500x + 12,000 models her retirement savings where y is the total she has saved in dollars, and x is the number of months.

Interpret the slope.

• Janice saves $12,000 every 500 months

• Janice saves $500 every 12,000 months

• Each month, Janice saves an additional $500

• Each month, Janice saves an additional $12,000

Tags

CCSS.HSS.ID.C.7

James has to sell restaurant discount cards as part of a fund raiser for soccer. The equation y = -10x + 500 models his selling where y is the total number of cards and x is the number of days.

Interpret the slope.

• James is selling 500 cards over 10 days

• James earns $500 for every 10 cards he sells

• James is selling 10 cards each day

• James starts with 500 cards to sell.

Tags

CCSS.HSS.ID.C.7

James has to sell restaurant discount cards as part of a fund raiser for soccer. The equation y = -10x + 500 models his selling where y is the total number of cards and x is the number of days.

Interpret the y-intercept.

• James is selling 500 cards over 10 days

• James earns $500 for every 10 cards he sells

• James is selling 10 cards each day

• James starts with 500 cards to sell.

Tags

CCSS.HSS.ID.C.7

Chris collects shoes. The equation y =3x + 122 models the number of pairs of Jordans(y) he has in his collection after x months.

Interpret the slope.

• Chris collects an additional 3 pair of Jordans each month

• Chris collects 122 pairs of Jordans every 122 months

• In 3 months, Chris will have 122 more pairs of Jordans.

• Chris sells 3 pairs of Jordans for $122 each.

Tags

CCSS.HSF.LE.B.5

CCSS.HSS.ID.C.7

The graph represents gasoline consumption when driving a certain distance in km.  What is the meaning of the slope?

• The tank started with 50 L of gasoline
• the amount of gasoline consumed per km driven
• the distance it takes to lose a Liter of gas
• the gasoline is leaking because the slope is negative.

Tags

CCSS.HSS.ID.C.7

Which statement matches the graph?

• Taylor can write 6 words per minute
• Taylor can write 25 words per minute
• Taylor can write 50 words per minute
• Taylor can write 150 words per minute

Tags

CCSS.7.RP.A.2D

The table represents a used car salesman's monthly salary including commission made on the sale of cars.  What is the y-intercept and what does it represent?

• The y-intercept is $850/car and it represents the commission per car sold.
• The y-intercept is $1500/car and it represents the commission per car sold.
• The y-intercept is $1500 and it represents the monthly salary before commission.
• The y-intercept is $2775 and it represents the monthly salary before commission.

Tags

CCSS.HSS.ID.C.7

The table represents a used car salesman's monthly salary including commission made on the sale of cars.  What is the slope and what does it represent?

• The slope is $850/car and it represents the commission per car sold.
• The slope is $425/car and it represents the commission per car sold.
• The slope is $1500 and it represents the monthly salary before commission.
• The slope is $850 and it represents the monthly salary before commission.

Tags

CCSS.HSS.ID.C.7

What is the meaning of the slope?

• Leona will receive $0.25 per paper delivered.

• Leona will receive $5 per paper delivered

• Leona will receive $2.50 per paper delivered

• Leona will receive $20 for the day

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

CCSS.HSS.ID.C.7