How do you determine whether (-1, -1) and (1, -1) is a solution to y > x - 2 y>x−2?

1 Answer
Meave60
Jul 19, 2015

(-1, -1)(−1,−1) is a solution to y>x-2y>x−2.

(1, -1)(1,−1) is not a solution.

Explanation:

Substitute the values into the inequality.

First Possible Solution

(-1, -1)(−1,−1)

y>x-2y>x−2 =

-1> -1-2−1>−1−2 =

-1> -3−1>−3

This is a correct statement.

(-1, -1)(−1,−1) is a solution for this inequality.
![http://www.sparknotes.com/math/algebra1/inequalities/section4.rhtml](useruploads.socratic.org)

Second Possible Solution

(1, -1)(1,−1)

y>x-2y>x−2

-1>1-2−1>1−2

-1> -1−1>−1

This is an incorrect statement. -1=-1−1=−1

(1, -1)(1,−1) is not a solution for this inequality.

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