Answer:
A
Step-by-step explanation:
You can eliminate B and D because it’s using 
, but the question is asking 
. So it’s either A or C. They are both written correctly, but out of the two, A is correct because just that x ≠ 
part of it is what makes it true.
The reason being is that the only thing that won’t make 
true is when the denominator equals 0, because anything divided by 0 is undefined. So, when you plug for x in the denominator you get: 
. The 
part just turns into 7, and 7 - 7 is 0. So you don’t want x to equal .
<u>So the answer is A:</u> 
, 
±
There you go my friend!
I hope you understand and that this helps with your question! :)
Answer:
wat?
Step-by-step explanation:
merry christmas....yey!!
Answer:
Step-by-step explanation:
y∞x
then
y=kx (with k as constant)
y=5 when x=8
⇒Putting this in the first equation
⇒5=k×8
⇒k=5/8
Now
y=? when x=64
Putting x=64 in the first equation
y=kx
⇒y=(5/8)×64
We get
y=40
Hope u understand
Given that the directrix is at y = 4 and the focus is at (0, -4), then the vertex is at (h, k) = (0, 0).
p is the distance between the vertex and the focus and between the vertex and the directrix = 4 and since the focus is below the directrix, p is negative, i.e. p = -4
Equation of a parabola is given by (x - h)^2 = 4p(y - k)
Therefore, the required equation is (x - 0)^2 = 4(-4)(y - 0)
x^2 = -16y
y = -1/16 x^2
