Interpret Slope and Y Intercept

The height (H in inches) of a candle is represented by the linear function: H(t)=-0.25t+6, where t represents the time passed in hours. What is the meaning of the y-intercept?

• The height of the candle will decrease by 0.25 inches per hour

• The height of the candle will increase by 0.25 inches per hour.

• The candle is 6 inches tall before it is lit. 

• The candle is 0.25 inches tall before it is lit. 

What is the meaning of the slope?

• You will receive $4 per paper delivered.

• You will receive $5 per paper delivered

• You will receive $20 per paper delivered

• You will receive $20 for the day

What is the meaning of the y-intercept? (Hint: what would the amount be for 0 hours?)

• The cost will increase by $12 per hour

• The initial fee is $15 before hourly charges

• The cost will increase by $15 per hour

• The initial fee before hourly charges is $12

What is the meaning of the y-intercept?

• Colby's initial deposit was $100. 

• Colby's initial deposit was $150

• Colby is adding $5 per week

• Colby is adding $10 per week

What is the meaning of the y-intercept?

• The cost for the service without any hours of calling is $5

• The cost of the service without any hours of calling is $6

• The cost per minute is $0.05

• The cost per minute is $0.50

What is the meaning of the slope?

• The cost for the service without any hours of calling is $5

• The cost of the service without any hours of calling is $6

• The cost per minute is $0.05

• The cost per minute is $0.50

The function C(m)=2.25+0.75m represents the total cost (C) you have to pay to take a cab m miles. What is the meaning of the slope?

• The cost of the trip will increase by $0.75 per mile. 

• You will have to pay $2.25 before you travel any miles. 

• You will have to pay $0.75 before you travel any miles.

• The cost of the trip will increase by $2.25 per mile.

The function C(m)=2.25+0.75m represents the total cost (C) you have to pay to take a cab m miles. What is the meaning of the y-intercept?

• The cost of the trip will increase by $0.75 per mile. 

• You will have to pay $2.25 before you travel any miles. 

• You will have to pay $0.75 before you travel any miles.

• The cost of the trip will increase by $2.25 per mile.

What is the meaning of the slope? 

• Colby's initial deposit was $100. 

• Colby's initial deposit was $150

• Colby is adding $5 per week

• Colby is adding $10 per week

In the equation f(x)= 4x – 6 the y-intercept is

• 4

• x

• 6

• -6