Answer:

Step-by-step explanation:

Multiply by 10 on both sides,

so 
She bought 9 raffle tickets cause she has p dollars and it takes 2 dollars for each ticket which is 4 tickets with one dollar left and then dose it again4 plusb4 is 8 plus 2 dollars is 9
I hope this makes sense, if not please feel free to let me know and I'll explain it.
Can you please clarify what you want to ask? Thanks!
Y = mx + c
y = 0.5x
y = 0.5*4 = 2
(4,2)