The question asked, what equation shows the line through the data points. And it stated the equation needed to be in the form y = kx
Where
y represents the vertical axis
x represents the horizontal axis
k = constant
K is the constant interval and can be use to get the next points
y = kx
viewing the most visible points from the graph , let use the point where total saved is 90(y axis) and the time in weeks (x axis) is 6, the constant K can be gotten.
The answer is C, D, and F. We know it is C because x-2 you would put a positive 2 and that is what is done. We know it is D because if you look at the graph that's where it would touch. We know it is F because the last number below the line is 0.