Which statements are true for the equation x2 = −4y? Check all that apply.
2 answers:
Answer:
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.
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Answer:
probability that Marnie and Noomi are both selected=0.1
Step-by-step explanation:
A group of 5 managers (Joon, Kendra, Lee, Marnie and Noomi), 2 people are randomly selected to attend a conference in Las Vegas.
the possibility of selecting 2 from 5 manages is 5C2 ways
There is only one choice of selecting Marine and Noomi from 5 managers
So probability of selecting Marine and Noomi is