Which statements are true for the equation x2 = −4y? check all that apply. the axis of symmetry is x = 0. the focus is at (0, –1). the parabola opens up. the parabola opens right. the value of p = −1. the equation for the directrix is y = 0.

1, 2 and 5 options are correct.

Step-by-step explanation:

Given:

It is a equation of parabola.

It is open downward because coefficient of y is negative.

Vertex: (0,0)

Axis of symmetry, x=0 ( x-coordinate of vertex )

4p=-4

p=-1

Thus, Focus: (0,-1)

Equation of directirx: y=1

Hence, The correct options are

The axis of symmetry is x = 0.

The axis of symmetry is x = 0.

The value of p = −1.

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.

to be honest i don't know but i need points so