Question

Tell whether the graph of the quadratic function y=-x^2-10x+1 opens upward or downward.

A. Because , the parabola opens upward.
B. Because , the parabola opens downward.
C. Because , the parabola opens upward.
D. Because , the parabola opens downward.

Answer 1

for
y=ax^2+bx+c
if a>0, then the paraobla opens up
if a<0, then parabola opens down

given
y=-1x^2-10x+1
-1<0
opens down because leading coefinet is negative

either B or D, they are identical (looks like something was omited)