Resources

Resources

Bytelearn - cat image with glasses

AI tutor

Welcome to Bytelearn!

Let’s check out your problem:

A parabola opening up or down has vertex $(0,0)$ and passes through $(20,20)$ . Write its equation in vertex form. $\newline$ Simplify any fractions.

View step-by-step help

View step-by-step help

Write a quadratic function from its vertex and another point

Full solution

Q. A parabola opening up or down has vertex

(0,0)

and passes through

(20,20)

. Write its equation in vertex form.

\newline

Simplify any fractions.

Vertex Form: What is the vertex form of the parabola? $\newline$ Vertex form of parabola: $y = a(x - h)^2 + k$
Equation at $(0,0)$ : What is the equation of a parabola with a vertex at $(0, 0)$ ? $\newline$ Substitute $0$ for $h$ and $0$ for $k$ in vertex form. $\newline$ $y = a(x - 0)^2 + 0$ $\newline$ $y = ax^2$
Substitute $(20,20)$ : $y = ax^2$ Replace the variables with $(20, 20)$ in the equation. Substitute $20$ for $x$ and $20$ for $y$ . $20 = a(20)^2$ $20 = 400a$
Solve for $a$ : $20 = 400a$ $\newline$ Solve for $a$ . $\newline$ $\frac{20}{400} = a$ $\newline$ $\frac{1}{20} = a$
Equation with $a=\frac{1}{20}$ : $y = ax^2$ $\newline$ What is the equation of the parabola if $a = \frac{1}{20}$ ? $\newline$ Substitute $\frac{1}{20}$ for $a$ . $\newline$ $y = \left(\frac{1}{20}\right)x^2$ $\newline$ Vertex form of parabola: $y = \left(\frac{1}{20}\right)x^2$

More problems from Write a quadratic function from its vertex and another point

Question

Solve by completing the square.

\newline

m^2 - 10m - 29 = 0

\newline

Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.

\newline

`m` = ____ or `m` = _____

Posted 1 month ago

Question

g(x)

g(x)

is the translation

5

f(x)=x^2

\newline

Write your answer in the form

a(x–h)^2+k

a

h

k

\newline

g(x)=

Posted 1 month ago

Question

What is the range of this quadratic function?

\newline

y = x^2 - 4x + 4

\newline

\newline

\left\{y \mid y \geq 2\right\}

\newline

\left\{y \mid y \leq 0\right\}

\newline

\left\{y \mid y \geq 0\right\}

\newline

\text{all real numbers}

Posted 1 month ago

Question

Write the equation of the parabola that passes through the points

(1,0)

(2,0)

(3,\text{–}16)

. Write your answer in the form

y = a(x – p)(x – q)

a

p

q

are integers, decimals, or simplified fractions.

\newline

Posted 1 month ago

Question

Complete the square. Fill in the number that makes the polynomial a perfect-square quadratic.

\newline

f^2 + 8f + \_\_\_\_\_

Posted 1 month ago

Question

h

\newline

h^2 + 39h = 0

\newline

\newline

Write each solution as an integer, proper fraction, or improper fraction in simplest form. If there are multiple solutions, separate them with commas.

\newline

h =

\newline

Posted 1 month ago

Question

Write a quadratic function with zeros

-9

-7

\newline

Write your answer using the variable

x

and in standard form with a leading coefficient of

1

\newline

f(x) = \_\_\_\_\_

Posted 2 months ago

Question

Find the equation of the axis of symmetry for the parabola

y = x^2

\newline

Simplify any numbers and write them as proper fractions, improper fractions, or integers.

\newline

\underline{\hspace{3cm}}

Posted 2 months ago

Question

g(x)

g(x)

is the translation

8

f(x) = x^2

\newline

Write your answer in the form

a(x – h)^2 + k

a

h

k

\newline

g(x) =

\newline

Posted 2 months ago

Question

x

\newline

x^2 = 1

\newline

\newline

Write your answer in simplified, rationalized form.

\newline

x =

x =

\newline

Posted 2 months ago