The y - intercept of g(x) = x² + 2x - 1 is ____________.

The correct answer is: - 1

The y - intercept of a quadratic function in standard form is the value of c.
g(x) = x2 + 2x - 1
comparing with standard equation: f(x) =ax2 +bx +c
a=1
b=2
c=-1
y-intercept = c = -1
The y - intercept is - 1