Question

The variables x and y vary inversely. Which equation relates x and y when
x = -1 and y = -9?

Answer 1

\[x \alpha (1/y) = x = K/ y\]

This can be equation..

SO now put x & y values in equation..

-1 = K/ -9

K = 9

So the equation would be , x = 9/ y...

Answer 2

Find the sum of the series: \[\sum_{i=1}^{4}6i-5\]