The value of y if x is equal to 5 is 75 and the value of y when x = 7 is 8/7
<h3>Direct and inverse variation</h3>
Variations shows the relationship between variables.
4) If y varies directly as x², hence;
y = kx²
27 = 9k
k = 3
In order to determine y if x = 5
y = 3(5*5)
Y = 75
Hence the value of y if x is equal to 5 is 75
5) If y varies inversely as x, hence;
y = k/x
k = xy
k = 16(1/2)
k = 8
If x = 7, the value of y will be;
y = 8/7
Hence the value of y when x = 7 is 8/7
Learn more on variation here: brainly.com/question/13998680
#SPJ1
