Parabola
4P(y-k)=(x-h)^2
where (h,k) is vertex
P is distance from vertex to focus which is also equalt to distance from vertex to directix
we plot those points and see it opens up (don't cross directix)
P is positive
from 4 to 3 is a distace of 1
1/2=1/2
P=1/2
3+1/2=3.5
the vertex is (-1,3.5)
4(1/2)(y-3.5)=(x+1)^2
2(y-3.5)=(x+1)^2
put in vertex form (solve for y)
divide both sides by 2
y-3.5=(1/2)(x+1)^2
add 3.5
y=
Answer:
theres the graph
Step-by-step explanation:
Answer:
x = 5.6 i guess
Step-by-step explanation:
use cos 45 = x/8
maybe
Answer:
12x-15
Step-by-step explanation:
A triangle has 3 sides
An equilateral triangle has 3 sides that are all the same length
The perimeter of a triangle is
P = s1+s2+s3
P = 4x-4 + 4x-5+4x-5
Combine like terms
P = 12x -15