Answer :
Answer:
D= −50t + 300
Step-by-step 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
equation of the line: D= −50t + 300