Question

What is the value of y when x = 0 in the function y = 20x − x²?

a) 0
b) 20
c) -20
d) 400

Answer 1

The value of y is 0 when x = 0 in the function y = 20x - x², as substituting x with 0 in the equation results in y = 0.

Step-by-step explanation:

The student is asking to find the value of y when x = 0 in the quadratic function y = 20x - x². To find this value, you simply substitute 0 for x in the equation and compute y.

Substituting x with 0, we get: y = 20(0) - (0)² = 0 - 0 = 0. So, the value of y when x = 0 in the function y = 20x - x² is (a) 0.