Please refer to the image attached with this answer. Please see that we are required to shift the ΔABC 8 units to the left. We just need to shift it to left. Hence the changes will occur in x coordinates only. Each of the x coordinates of the original triangle will be shifted to left by 8units. Hence we just subtract 8 from each x coordinates. It gives us a new triangle ΔA'B'C' whose coordinates will be
No it is not proportional. Since she brought the last apple for 1/2 the price, the equation won’t be linear (straight line) anymore so it won’t be proportional. Proportional means the same unit rate.