Final answer:
To make y the subject of the given formula, subtract a from both sides and divide by -2b before taking the square root.
Step-by-step explanation:
To make y the subject of the formula x = a - 2by², we need to isolate y on one side of the equation. Here's how:
1. Begin by subtracting a from both sides of the equation: x - a = -2by².
2. Divide both sides of the equation by -2b: (x - a) / (-2b) = y².
3. Take the square root of both sides to solve for y: y = √((x - a) / (-2b)).
Learn more about Rearranging formulas