The set of points we have is:
[tex]R=\mleft\{\mleft(8,7\mright),(8,9),(10,11),(12,14)\mright\}[/tex]Let's remember that a point has the general form (x,y), so that the first value in the parentheses is the x-value, and the second value is the y-value.
The domain is the set of values possible for x. In this case, the domain will be all of the x-values of all of the given points.
Domain: {8, 10, 12}
Answer: {8, 10, 12}
