8.3.8 Practice

Select all equations that have graphs with the same y-intercept.

Create a graph IN YOUR WORKBOOK showing the equations y = \frac{1}{4}x and y = \frac{1}{4}X - 5. Explain how the graphs are the same and how they are different.

A cable company charges $70 per month for cable service to existing customers.

Find a linear equation representing the relationship between x, the number of months of service, and y, the total amount paid in dollars by an existing customer.

For new customers, there is an additional one-time $100 service fee. Find a linear equation representing the relationship between x, the number of months of service, and y, the total amount paid in dollars by an existing customer.

A cable company charges $70 per month for cable service to existing customers.

When the two equations are graphed in the coordinate plane, how are they related to each other geometrically?

A mountain road is 5 miles long and gains elevation at a constant rate. After 2 miles, the elevation is 5500 feet above sea level. After 4 miles, the elevation is 6200 feet above sea level.

FIRST- Find the slope/elevation of the road

A mountain road is 5 miles long and gains elevation at a constant rate. After 2 miles, the elevation is 5500 feet above sea level. After 4 miles, the elevation is 6200 feet above sea level.

Find the elevation of the road at the point where the ROAD BEGINS.

A mountain road is 5 miles long and gains elevation at a constant rate. After 2 miles, the elevation is 5500 feet above sea level. After 4 miles, the elevation is 6200 feet above sea level.

Write the point from part a (question 7) or describe it's location on the graph.

Match each graph to a situation.