which ordered pair is a solution of the equation 2x-y=9? a-(-6,2) b-(-5,2) c-(2,-6) d-(2,-5)?

Answer 1

Ordered pairs give coordinates on an x-y plane (the kind you graph on), so they all take the form (x, y).

Therefore, all the choices you are given are values for x (the first number in the parentheses) and y (the second number in the parentheses).

You need to plug each pair into the equation to see which one makes it true. Be careful with negatives--write out the equation like this:

2 ( ) - ( ) = 9

and substitute in the x's and y's into the parentheses.

Answer 2

d. (2, -5)

2x - y = 9
2(2) -(-5) = 9
4 + 5 = 9

Why do you ask?

Answer 3

d