Answer:
The correct option is C.
Explanation:
From the given graph it is clear that the x-intercept is 8 and y-intercept is 4.
A.
If Tabitha took 6 hours to drive to her friend’s house, then the x-intercept must be 6, which is not equal to 8.
According to the graph the Tabitha took 8 hours to drive to her friend’s house because the x-intercept is 8.
Therefore the option A is incorrect.
B.
If Matthew used 12 gallons of gas in all, then the the x-intercept must be 12, which is not equal to 8.
According to the graph the Matthew used 12 gallons of gas in all because the x-intercept is 8.
Therefore the option B is incorrect.
C.
Rosa will pay off her loan in the eighth month, then the the x-intercept must be 8.
Since the x-intercept of line is 0, therefore the option C is correct.
D.
Eight members of Hoi's family were each charged $4, then the function is defined as
f(x)=4x
Here the slope of line is 4.
According to the graph the line has negative slope.
Therefore the option D is incorrect.