Question

Make y the subject of the formula k=y^2+a

Answer 1

To begin, let's take a relatively simple example.
Make x the subject of the formula:
4y + 2 = x - 4.
x = 4y + 6.
Make y the subject of the formula.
2y/5 - 3x = 2.
TIP: Remember to put brackets around 2 + 3x because both the 2 and the 3x are being multiplied by 5.
y = 5 + 15x/2.

Answer 2

The variable y as the subject of the formula is y = √(k - a)

How to make the variable y the subject of the formula

From the question, we have the following parameters that can be used in our computation:

k = y² + a

Subtract a from both sides of the equation

So, we have

y² = k - a

Take the square root of both sides

√y² = √(k - a)

Evaluate

y = √(k - a)

Hence, the variable y as the subject of the formula is y = √(k - a)