Answer:
y=1.5x+2.5
Step-by-step explanation:
First you find the slope:
or
lets change it into 1.5
Then write it in point-slope: (I used (1,4))
y-4=1.5(x-1)
y-4=1.5x-1.5
$13,230
you need to multiply the cost of the ticket by the amount of tickets sold,
630 x 21 = $13,230