Determine whether the relation is a function identify the domain and the range (1,3) (5,15) (7,21)

Yes it's a function, Domain is all real numbers

Step-by-step explanation:

This is a function because y varies directly with x by a factor of 3. We can make the equation y=3x to represent this. The domain is all real numbers since any real number plugged in gets a real number output

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.