A recipe calls for 2 1 cup of ingredient A for every 1
3
2 cups of ingredient B.
You use 4 cups of ingredient A. How many cups of ingredient B do you need?

4/(1/2) = 8

8 * 1 1/3 = 8 8/3 = 10 2/3 cups of B

step-by-step explanation:

total income = price of one ticket   *   number of tickets sold

  y                 =     4                                   x

so the equation is y=4x     with x≥0   because number of tickets sold can not be negative

thus the equation is a semi -line with an end point at

(0,0)

passing through :

x=1     y=4(1) = 4   so through (1,4)