Answer:
(a): Negative relationship
(b): 70 km
(c): It is the starting point where the bicyclist starts cycling.
Step-by-step explanation:
a: Looking at the points and the line, the graph is decreasing. I don't really know what your teacher exactly wants, but the answer could also be like "as the values of x increases, the values of y decreases."
b: On the graph, the time (number of hours) is shown in the x-axis. Given to calculate the remaining distance after 4 hours, we will substitute 4 into x.
y = -25x + 170
y = -25(4) + 170
y = -100 + 170
y = 70
There are 70 km remaining.
c: 170 is basically the y-intercept of the graph, where x is 0. When the time is 0, it means that the bicyclist didn't start moving. It is the exact starting point where the bicyclist will start cycling.
