Dominic is going to drive from his house to City A without stopping. Dominic's house is 300 miles from City A and he plans to drive at a speed of 50 miles per hour. Write an equation for D, D, in terms of t, t, representing Dominic's distance from City A tt hours after leaving his house.

D = -50t + 300

Explanation:

Since Dominic lives 300 miles from City A, when he starts his trip (at time

t=0), his distance from City A must be 300 miles, meaning D=300 when

t=0, which is the y−intercept.

                                   (0,300) is a point on the graph

Since Dominic will drive 50 miles per hour, the Dominic's distance from City A decrease 50 miles for each hour of driving, making the slope of D equal to −50.

                                                  Slope = −50

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hi there!

the answer you are looking for is relatively steep.

have a nice day!