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What is the focus of the parabola
y
=
x
2
y = x^2
y
=
x
2
?
\newline
Simplify any
fractions
.
\newline
(
_
,
_
(\_,\_
(
_
,
_
)
\newline
View step-by-step help
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Math Problems
Algebra 2
Find the focus or directrix of a parabola
Full solution
Q.
What is the focus of the parabola
y
=
x
2
y = x^2
y
=
x
2
?
\newline
Simplify any fractions.
\newline
(
_
,
_
(\_,\_
(
_
,
_
)
\newline
Vertical Parabola:
y
=
x
2
y = x^2
y
=
x
2
is a vertical parabola, so it opens upwards.
Standard Form:
The standard form of a parabola is
y
=
a
(
x
−
h
)
2
+
k
y = a(x - h)^2 + k
y
=
a
(
x
−
h
)
2
+
k
, where
(
h
,
k
)
(h, k)
(
h
,
k
)
is the vertex.
Calculate Parameters:
For
y
=
x
2
y = x^2
y
=
x
2
,
a
=
1
a = 1
a
=
1
,
h
=
0
h = 0
h
=
0
, and
k
=
0
k = 0
k
=
0
, since it's already in the form
y
=
(
x
−
0
)
2
+
0
y = (x - 0)^2 + 0
y
=
(
x
−
0
)
2
+
0
.
Focus Calculation:
The focus of a parabola is
(
h
,
k
+
p
)
(h, k + p)
(
h
,
k
+
p
)
, where
p
=
1
4
a
p = \frac{1}{4a}
p
=
4
a
1
.
Calculate
p
p
p
:
Calculate
p
p
p
:
p
=
1
4
×
1
=
1
4
p = \frac{1}{4\times 1} = \frac{1}{4}
p
=
4
×
1
1
=
4
1
.
Substitute Values:
Substitute
h
=
0
h = 0
h
=
0
,
k
=
0
k = 0
k
=
0
, and
p
=
1
4
p = \frac{1}{4}
p
=
4
1
into the focus formula: Focus =
(
0
,
0
+
1
4
)
(0, 0 + \frac{1}{4})
(
0
,
0
+
4
1
)
.
Focus of Parabola:
The focus of the parabola
y
=
x
2
y = x^2
y
=
x
2
is
(
0
,
1
4
)
(0, \frac{1}{4})
(
0
,
4
1
)
.
More problems from Find the focus or directrix of a parabola
Question
What is the focus of the parabola
y
=
−
x
2
y = -x^2
y
=
−
x
2
?
\newline
Simplify any fractions.
\newline
(_____ , _____)
\newline
Get tutor help
Posted 1 year ago
Question
The equation of a parabola is
y
=
x
2
−
10
x
+
25
y = x^2 - 10x + 25
y
=
x
2
−
10
x
+
25
. Write the equation in vertex form.
\newline
Write any numbers as integers or simplified proper or improper fractions.
\newline
______
Get tutor help
Posted 1 year ago
Question
In which direction does the parabola
x
+
y
2
=
−
7
x + y^2 = -7
x
+
y
2
=
−
7
open?
\newline
Choices:
\newline
(A)
up
\text{up}
up
\newline
(B)
down
\text{down}
down
\newline
(C)
right
\text{right}
right
\newline
(D)
left
\text{left}
left
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Posted 1 year ago
Question
What is the vertex of the parabola
y
=
−
4
(
x
−
2
)
2
+
2
y = -4(x - 2)^2 + 2
y
=
−
4
(
x
−
2
)
2
+
2
?
?
?
\newline
(
_
,
_
)
(\_,\_)
(
_
,
_
)
Get tutor help
Posted 1 year ago
Question
What is the axis of symmetry of the parabola
x
=
1
2
(
y
+
3
)
2
+
5
x = \frac{1}{2}(y + 3)^2 + 5
x
=
2
1
(
y
+
3
)
2
+
5
?
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Posted 1 year ago
Question
In which direction does the parabola
x
−
2
y
2
=
−
5
x - 2y^2 = -5
x
−
2
y
2
=
−
5
open?
\newline
Choices:
\newline
[A]up
\text{[A]up}
[A]up
\newline
[B]down
\text{[B]down}
[B]down
\newline
[C]right
\text{[C]right}
[C]right
\newline
[D]left
\text{[D]left}
[D]left
Get tutor help
Posted 1 year ago
Question
What is the vertex of the parabola
y
−
8
x
2
=
4
y - 8x^2 = 4
y
−
8
x
2
=
4
?
\newline
(
_
,
_
)
(\_,\_)
(
_
,
_
)
Get tutor help
Posted 11 months ago
Question
The equation of a circle is
x
2
+
(
y
+
4
)
2
=
1
x^{2}+(y+4)^{2}=1
x
2
+
(
y
+
4
)
2
=
1
. What are the center and radius of the circle?
\newline
Choose
1
1
1
answer:
\newline
(A) The center is
(
−
4
,
0
)
(-4,0)
(
−
4
,
0
)
and the radius is
1
1
1
.
\newline
(B) The center is
(
4
,
0
)
(4,0)
(
4
,
0
)
and the radius is
1
1
1
.
\newline
(C) The center is
(
0
,
4
)
(0,4)
(
0
,
4
)
and the radius is
1
1
1
.
\newline
(D) The center is
(
0
,
−
4
)
(0,-4)
(
0
,
−
4
)
and the radius is
1
1
1
.
Get tutor help
Posted 1 year ago
Question
y
=
(
x
−
3
)
(
x
+
9
)
y=(x-3)(x+9)
y
=
(
x
−
3
)
(
x
+
9
)
\newline
The given equation is graphed in the
x
y
x y
x
y
-plane. Which of the following are
x
x
x
-intercepts of the graph?
\newline
Choose
1
1
1
answer:
\newline
(A)
−
3
-3
−
3
and
−
9
-9
−
9
\newline
(B)
−
3
-3
−
3
and
9
9
9
\newline
(C)
3
3
3
and
−
9
-9
−
9
\newline
(D)
3
3
3
and
9
9
9
Get tutor help
Posted 1 year ago
Question
If
y
=
2
x
2
−
5
x
+
7
y=2 x^{2}-5 x+7
y
=
2
x
2
−
5
x
+
7
is graphed in the
x
y
x y
x
y
-plane, which of the following characteristics of the graph is displayed as a constant or coefficient in the equation?
\newline
Choose
1
1
1
answer:
\newline
(A)
x
x
x
-intercept(s)
\newline
(B)
y
y
y
-intercept
\newline
(C)
x
x
x
-coordinate of the vertex
\newline
(D)
y
y
y
-coordinate of the vertex
Get tutor help
Posted 1 year ago
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Algebra - Order of Operations
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Common Multiple
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