It could sometimes be proportional. The reasoning here is that if all the items have different prices it won't be, however if the items you are ordering all have the same price they will be!
Answer:
26.4
31.2
33.3
These are the easy questions, the rest will have a square root and a a number outside.
Answer: y = -1/4 * x - 4
Explanation:
Slope intercept form : y = mx + b
m = slope & b = y intercept
y = mx + b
y = -1/4(x) + b
y = -1/4(x) - 4
-1/4 is slope
-4 is y intercept
