Answer: slope = -60 , y - intercept = 400
Explanation:
Given :
y = 400 - 60x
comparing with the equation of the line in slope - intercept form
y = mx + c , where m is the slope and c is the y - intercept
then ;
slope = -60
y - intercept = 400
(ii) The interpretation of the slope and the intercept.
Recall that speed = distance / time , that is
distance = speed x time.
it was given that the car is travelling 60 miles per hour , and the equation is used to model the distance from destination after x hours.
And you are 400 miles away from your destinations, this means that after x hours , you have traveled 60x miles , to know how far you are to your destination , the distance covered after x hours will be subtracted from how far you are away from your destination , that is
400 - 60 x.
The means that the y in the equation represent how far you will be to your destination after x hours.