The graph shows the value of a car at different years after Gianna purchased it.

Which is the best estimate for the average rate of change between Year 4 and Year 9?

A. –$900/year

B. –$450/year

C. –$330/year

D. –$180/year

Question

The graph shows the value of a car at different years after Gianna purchased it. 

Which is the best estimate for the average rate of change between Year 4 and Year 9?

		
A. –$900/year
		
B. –$450/year
		
C. –$330/year
		
D. –$180/year

freemap · Answer

attachment

freemap · Answer

I think its B, $-450

freemap · Answer

I subtracted what I thought the in between answers were

danjs · Answer

Year 4 value is about 2300;   (4 , 2300)
year 9 value is about 1400;    (9 , 1400)

The average rate of change is the slope of a line connecting those 2 points

freemap · Answer

ok so -900/5=-180 slope

danjs · Answer

yep.

The value changes about $900 in 5 years