Suppose that y varies inversely with x , and y=5 when x=4
write an inverse variation that relates x and y
equation:
find y when x=10
equation: y = k / x
First, solve for k using the given values:
5 = k / 4
k = 20
Now plug in k and x=10 to find y:
y = 20 / 10
y = 2
Therefore, when x=10, y = 2.