Linear Functions Model

Which coordinate plane represents the linear relationship 4x + 5y = 20?

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Select the equation that represents the graph of the line.

• y = x - 1

• y = (1/2)x - 1

• y = (1/2)x + 2

• y = x + 2

Jackson is tracking how many cups of cat food he has left after feeding his cats each day. He made the following chart. According to the graph, how many cups of cat food does Jackson have left after 5 days?

• 14 cups

• 13 cups

• 8 cups

• 10 cups

A company charges a fee of $2,000 plus $3 per mile to transport some equipment by truck. Which graph shows the relationship between the number of miles the truck is driven and the cost for transporting the equipment?

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Which table of values can be represented by the function y = 2x + 5 $?

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Rich is a member of a gym. He pays a monthly fee plus a per-visit fee. The equation below represents the monthly amount Rich pays for his membership to the gym per month for x visits.

y= 10 + 3x

What does the y-intercept of the graph of this equation represent?

• The monthly fee

• How much Rich pays per visit

• The number of times Rich goes to the gym

• The total cost at the end of the month

What is a line of best fit used for?

• To make predictions

• To make the graph look pretty

• To connect the points

• To make it look like you know what you are doing

Is this line an accurate line estimate of best fit for the data?

• Yes

• No

Is this line an accurate line estimate of best fit for the data?

• Yes

• No

What type of correlation does this graph have?

• positive linear

• negative linear

• none