Review: 3C-Graph & Identify Key Features of Linear Functions

Given equation

y = 30x + 50

Which part is the

RATE?

• y

• 30

• x

• 50

Joe has a lemonade stand. He charges for the cup and he charges for each ounce of lemonade poured into the cup. The expression 1+0.5x represents the total cost of a cup of lemonade. What does the VARIABLE represent?

• the cost of each ounce of lemonade

• the total cost for a cup of lemonade

• the number of ounces of lemonade poured

• the cost of the cup

The cost of airing a commercial on television is modeled by the function C(n)=110n+900, where n is the number of times the commercial is aired. Based on this model, which statement is true?

• The commercial costs $0 to produce and $110 per airing up to $900.

• The commercial costs $110 to produce and $900 each time it is aired.

• The commercial costs $900 to produce and $110 each time it is aired.

• The commercial costs $1010 to produce and can air an unlimited number of times.

Fill in the blank. y = 5x - 4 means ___________ 5 and x and subtract 4 to get y.

How many hours of sleep will people get if they don't drink any coffee?

• 6

• 7.5

• 8

• 8.5

_{What are the coordinates of the y-intercept of the line?}

• (-1, 0)

• (-1, -3)

• (1, 1)

• (0, -1)

What is the y-intercept of the line graphed below?

• 3

• 4

• -3

• 4/3

What is the y-intercept of the line graphed below?

• -1

• 3

• -3

• -2

The linear function t has an x-intercept of -1 and a y-intercept of 5. Which graph best represents t?

• 
• 
• 
• 

The graph models the linear relationship between the number of monthly payments made on a loan and the remaining balance in dollars left to pay on the loan. Which statement describes the x-intercept of the graph?

• The x-intercept is 60, which represents the initial balance in dollars of the loan.

• The x-intercept is 27,000, which represents the initial balance in dollars of the loan.

• The x-intercept is 60, which represents the number of monthly payments needed to repay the loan.

• The x-intercept is 27.000, which represents the number of monthly payments needed to repay the loan.