Question

Given: x + y = 6.

If XE (-15, -6, -1), then which of the following sets of ordered pairs are solutions?
© {(-15, -21), (-6, -12), (-1, -7)}
[(-15, 21), (-6, 12).(-1, 7)}
{(-15, 21), (-6, 12), (-1, -7)}

Answer 1

[(-15, 21), (-6, 12).(-1, 7)}

Explanation:

we have

x+y=6

Find the values of y for XE (-15, -6, -1)

so

For x=-15

-15+y=6 --->y=21

therefore

a solution is the point (-15,21)

For x=-6

-6+y=6 --->y=12

therefore

a solution is the point (-6,12)

For x=-1

-1+y=6 --->y=7

therefore

a solution is the point (-1,7)

The set of ordered pairs that are solutions is

[(-15, 21), (-6, 12).(-1, 7)}