Question

A point (x,y) lies on the unit circle such that x=−1 . What is the y-coordinate for this point?(1 point)

Answer 1

The equation for the unit circle is x^2 + y^2 = 1. Since x = -1, we can substitute this value into the equation to solve for y.

(-1)^2 + y^2 = 1
1 + y^2 = 1
y^2 = 0
y = 0

Therefore, the y-coordinate for the point (-1, y) is 0.