Question

Fin k if y =kx2, and y=25 when x =5​

Answer 1

`k = 1`

Explanation:

Given

`y = kx^2`

Required

Find k, when:
`y=25;x=5`

We have:

`y = kx^2`

Substitute 25 for y and 5 for x

`25 = k * 5^2`

`25 = k * 25`

Divide both sides by 25

`(25)/(25) = (k * 25)/(25)`

`(25)/(25) = k`

`1 = k`

`k = 1`

Hence; the value of k is 1