Question

If it is known that point (-3,1/5) belongs on graph y=k/x^2. Find the value of k.

Answer 1

Answer:

k = 9/5

Step-by-step explanation:

In y=k/x^2 replace x with (-3) and y with (1/5); then calculate k:

              k

(1/5) = ----------

           (-3)^2

         1           k

or   ------- = ----------

          5          9

Solving for k through cross-multiplication, we get

5k = 9, or k = 9/5