Question

Mariella is driving a distance of 100 miles. She drives at a constant rate of 60 miles per hour. The equation that represents the distance she has left to go is y= 100 – 60x, where x is the number of hours she has already driven.

a. Graph the equation.

Answer 1

The equation for the distance Mariella has left to go, can be used to obtain the ordered pairs for the points on the graph;

(a) Please find attached the graph of the equation y = 100 - 60·x created with MS Excel

How can the equation representing the distance be graphed?; The equation representing the distance Mariella has left to go can be graphed by using the ordered pair of points obtained from the equation as follows;

Where y is the distance she has left to go and x is the number of hours she has already driven

The equation is; y = 100 - 60·x

The points on obtained using the equation are;

x y

0 100

0.5 70

1.0 40

1.5 10

10/6 0

The above ordered pairs can be used to graph the equation on the coordinate plane using MS Excel