So all you have to do to solve these problems is substitute the y coordinate and the x coordinate into the equation.
So question 1 would be true because when you substitute the numbers in it equals the y value.
Question 2 is (4, -7)
Question 3 is False
Question 4 is true
Question 5 is true
See if you can do the rest!
Divide 90.65 by 12.95
90.65/12.95 = 7 books
I don't really know if this is correct but I think it is x+y+z=14
I don’t really know, but it could be b or c. If none then just pick a question :D