4.5 Real World Problems Linear Equations

Homework p180(1-4) Lesson Objective: Explain slope and y-intercept in the context of real world problems.

From the graph, the vertical intercept is the y-intercept. What is the vertical intercept? _________________ This is the number of gallons of water in the pool when it is full. The slope of the graph represents the rate, in gallons per hour, at which water is draining out of the pool. Find the slope:

So, _______________ gallons of water drains from the pool every hour. The equation of the line is ___________________________.

From the graph, the vertical intercept is the y-intercept. What is the vertical intercept? _________________ The vertical intercept represents _________________________ The slope of the graph represents the rate, _____________, the rental cost of the bike. Find the slope:

The equation of the line is ___________________________.

The vertical intercept is _________. It represents ___________________________________. The slope of the graph is ______________. Which brother is driving faster? How do you know?

Find the vertical intercept of Britney’s graph and explain what information it gives about the situation. Find the slope of Britney’s graph and explain what information it gives about the situation. Is Britney adding money at a faster rate or is Scarlet taking out money at a faster rate? Explain.