# Linear Equations and Quatitives Whole Lesson -- Getting Ahead

## In this demonstration below, their are zero marbles and the water is at 60 ml. How many marbles are needed to have the water go up to 100? Plot this on a graph (graphy below) and write the answer below.

In this demonstration below, their are zero marbles and the water is at 60 ml. How many marbles are needed to have the water go up to 100?

What is the slope of the problem?

Warm Up done! Now you wil have to make equations to solve your problems. Let's do a practice problem. 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.
1. Find the elevation of the road at the point where the road begins.
2. Describe where you would see the point in part (a) on a graph where yrepresents the elevation in feet and x represents the distance along the road in miles.
Solution
1. 4800 feet above sea level
2. The point would be (0,4800) located on the y-axis.