It's important to use proper symbols here in presenting math problems.
y = 1 - x 2 and y = e -x
should be written as: y = 1 - x^2 and y = e^( -x), so that there is no doubt regarding which exponent you mean.
To help y ou get started:
y = 1 - x^2
has a parabolic graph with vertex/ maximum at (0,1),
and y = e^( -x) has the graph of a decaying exponential; its y-intercept is (0,1). This graph appears primarily in Quadrant I, but also in Quadrant II, but never in Q III or Q IV.