The midpoint is (7,4.75) so the y-coordinate should be y=4.75. I hope that helps
I'm assuming that the salary is for the whole year. If it is not, do tell me.
Tax = 10/100 * 45000
= 4500
You owe $4500 in federal taxes.
The domain is "x", because that is what you input
hope this helps
Price of the car= $26304
Monthly payments= 24
Just divide
26304/24 which equals $1096