For the inverse variation equation xy = k, what is the constant of variation, k, when x = 7 and y = 3?

For this case we have the following expression:
 
 To find the constant k, what we must do is replace the following values in the given equation:
 
 Substituting values we have:
 
 
 the constant of variation, k, is:
 

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Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3