Question

Use the image to answer the question.

A line with an arrow at the top is plotted in quadrant 1 of a coordinate plane. The x-axis is labeled Hours, and the y-axis is labeled Amount in Dollars.
▶Click for Long Desc

Using this graph of a linear equation as an example, create a real-world situation that the graph could model. In 3–5 sentences, explain what the graph is modeling.

Answer 1

A private tutor charges $20 per hour for lessons. The graph shows Hours on the x-axis and Amount in Dollars on the y-axis, so each extra hour of tutoring increases total pay by $20. The slope of the line represents the $20-per-hour rate, and if the line goes through the origin it means zero hours yields zero pay. The arrow at the top indicates that as hours continue to increase, the amount earned keeps rising proportionally.