Question

The table shows the total cost of cupcakes (y) for (x) number of cupcakes.
Number of Cupcakes
x Total Cost
y
3 6
4 8
5 10
6 12

Part a. Write a function rule to relate (y) and (x).

Part b. Show how you can use the function rule to find the total cost for 11 cupcakes. Show all of your work.

Answer 1

Well there's a method to finding a function rule but its clearly being multiplied by 2,

For every x value, the y value is double.

So it should be something like this: y = 2x + 0

y = 2(4)
y = 8

Answer 2

Your table looks kinda, um, messed up >.>