C is your answer e cause u supposed to multiple
ACUTE ANGLE.
this is because the angle is less than 90 degree and greater than 0 degree
Answer:

which agrees with the last option listed.
Step-by-step explanation:
We use the vertex form of a parabola:

which with the information we have becomes:

Therefore the equation that corresponds to such vertex (-1, -1) is the last one listed among your given answer options.

Answer:
a) 2
b) -2
c) -2
d) 1/2
Step-by-step explanation:
1) f(-4) means that x=-4 and you must locate the y value on the graph
2) f(2) means that x=2 and you must locate the y value on the graph
3) f(x)=4 means that y=4 and you must locate the x value on the graph
4) f(x)=-1 means that y=-1 and you must locate the x value on the graph