Determine a relationship between x- and y-values. Write an equation.

Question

{(1, -1), ( 2, -2), (3, -3), (4, -4)

Answer 1

mmmhhh
did you notice that the y is always the negative of the x ???

so .....

Answer 2

Is the answer y = -x, then?

Answer 3

x=-y

so that would be the general expresion

Answer 4

or even better you could say that x+y=0
Algebra teachers like it more :)

Answer 5

Are you certain?

Answer 6

jason wants to buy his brother a comic book. If he buys it online it costs $3.50, but if he buys it in the store there is a 20% markup. How much does the comic book cost in the store?

Answer 7

y = -x