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)
![Tickets for the school play sell for $4 each. which graph shows the relationship between the number](/tpl/images/06/02/hk1pTJgJtAj7oCSd.jpg)