Comparing Store Payment Plans

The video tutorial explains how to compare functions presented as graphs and descriptions. It covers writing equations in slope-intercept form for both graphical and descriptive data, and demonstrates this with a practical example involving layaway plans for a pressure washer at two stores. The tutorial compares the plans by analyzing their equations, slopes, and y-intercepts, and concludes with a comparison of the time taken to complete each plan. The lesson ends with a transition to the next topic on determining rate of change and initial value.

What is the first step in comparing functions presented as a graph and a description?

• Draw a graph of the description.

• Write an equation in slope-intercept form for the graph.

• Identify the input and output variables.

• Convert the graph to a table.

When writing an equation from a description, what should you identify?

• The input x, output y, and rate of change.

• The slope and y-intercept.

• The description's length.

• The graph's starting point.

Why is it easier to compare functions when they are in the same form?

• It eliminates the need for calculations.

• It simplifies the graphing process.

• It allows for direct comparison of slopes and y-intercepts.

• It reduces the number of variables.

What is the cost of the pressure washer Sam wants to buy?

• $150

• $300

• $250

• $200

What is the down payment required at Store B?

• $200

• $150

• $100

• $50

What is the slope of the equation for Store A?

• -20

• -10

• -40

• -30

What is the y-intercept for Store A's equation?

• 150

• 250

• 200

• 100

What is the weekly payment amount for Store B?

• $20

• $30

• $40

• $10

What is the y-intercept for Store B's equation?

• 100

• 250

• 150

• 200

How many weeks will it take to pay off the layaway plan at Store A?

• 15 weeks

• 10 weeks

• 5 weeks

• 20 weeks