Resourcesdown chevron
Testimonials
Plans
Sign in
Sign up
Resourcesright arrow
Testimonials
Plans
Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

A parabola opening up or down has vertex (0,−1)(0,-1) and passes through (−8,−9)(-8,-9). Write its equation in vertex form.\newlineSimplify any fractions.

View step-by-step helpView step-by-step help
Homeright chevron icon
Math Problemsright chevron icon
Algebra 2right chevron icon
Write a quadratic function from its vertex and another pointright chevron icon

Full solution

Q. A parabola opening up or down has vertex (0,−1)(0,-1) and passes through (−8,−9)(-8,-9). Write its equation in vertex form.\newlineSimplify any fractions.
  1. Vertex Form Explanation: What is the vertex form of the parabola?\newlineThe vertex form of a parabola is given by the equation y=a(x−h)2+ky = a(x - h)^2 + k, where (h,k)(h, k) is the vertex of the parabola.
  2. Vertex at (0,−1)(0, -1): What is the equation of a parabola with a vertex at (0,−1)(0, -1)?\newlineSince the vertex is (0,−1)(0, -1), we substitute h=0h = 0 and k=−1k = -1 into the vertex form equation.\newliney=a(x−0)2−1y = a(x - 0)^2 - 1\newliney=ax2−1y = ax^2 - 1
  3. Use Point (−8,−9)(-8, -9): Use the point (−8,−9)(-8, -9) to find the value of aa. The parabola passes through the point (−8,−9)(-8, -9), so we substitute x=−8x = -8 and y=−9y = -9 into the equation to solve for aa. −9=a(−8)2−1-9 = a(-8)^2 - 1 −9=64a−1-9 = 64a - 1
  4. Solve for 'a': Solve for 'a'.\newlineAdd 11 to both sides of the equation to isolate the term with 'a'.\newline−9+1=64a−1+1-9 + 1 = 64a - 1 + 1\newline−8=64a-8 = 64a\newlineNow, divide both sides by 6464 to solve for 'a'.\newline−8/64=a-8 / 64 = a\newline−1/8=a-1 / 8 = a
  5. Final Equation in Vertex Form: Write the equation of the parabola in vertex form using the value of aa.\newlineNow that we have found aa to be −18-\frac{1}{8}, we substitute it back into the equation y=ax2−1y = ax^2 - 1.\newliney=(−18)x2−1y = \left(-\frac{1}{8}\right)x^2 - 1\newlineThis is the equation of the parabola in vertex form.

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

Question
Solve by completing the square.\newlinem2−10m−29=0m^2 - 10m - 29 = 0\newlineWrite your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.\newline`m` = ____ or `m` = _____
Get tutor helpright-arrow

Posted 8 months ago

Question
Find g(x) g(x) , where g(x) g(x) is the translation 5 5 units up of f(x)=x2 f(x)=x^2 .\newlineWrite your answer in the form a(x–h)2+k a(x–h)^2+k , where a a , h h , and k k are integers.\newlineg(x)= g(x)= ____
Get tutor helpright-arrow

Posted 7 months ago

Question
What is the range of this quadratic function?\newliney=x2−4x+4y = x^2 - 4x + 4\newlineChoices:\newline{y∣y≥2}\left\{y \mid y \geq 2\right\}\newline{y∣y≤0}\left\{y \mid y \leq 0\right\}\newline{y∣y≥0}\left\{y \mid y \geq 0\right\}\newlineall real numbers\text{all real numbers}
Get tutor helpright-arrow

Posted 5 months ago

Question
Write the equation of the parabola that passes through the points (1,0)(1,0), (2,0)(2,0), and (3,–16)(3,\text{–}16). Write your answer in the form y=a(x–p)(x–q)y = a(x – p)(x – q), where aa, pp, and qq are integers, decimals, or simplified fractions.\newline______
Get tutor helpright-arrow

Posted 5 months ago

Question
Complete the square. Fill in the number that makes the polynomial a perfect-square quadratic.\newlinef2+8f+_____f^2 + 8f + \_\_\_\_\_
Get tutor helpright-arrow

Posted 5 months ago

Question
Solve for h h .\newlineh2+39h=0 h^2 + 39h = 0 \newline\newlineWrite each solution as an integer, proper fraction, or improper fraction in simplest form. If there are multiple solutions, separate them with commas.\newlineh= h = ____\newline
Get tutor helpright-arrow

Posted 5 months ago

Question
Write a quadratic function with zeros −9-9 and −7-7.\newlineWrite your answer using the variable xx and in standard form with a leading coefficient of 11.\newlinef(x)=_____f(x) = \_\_\_\_\_
Get tutor helpright-arrow

Posted 5 months ago

Question
Find the equation of the axis of symmetry for the parabola y=x2y = x^2. \newlineSimplify any numbers and write them as proper fractions, improper fractions, or integers.\newline‾\underline{\hspace{3cm}}
Get tutor helpright-arrow

Posted 4 months ago

Question
Find g(x)g(x), where g(x)g(x) is the translation 88 units up of f(x)=x2f(x) = x^2.\newlineWrite your answer in the form a(x–h)2+ka(x – h)^2 + k, where aa, hh, and kk are integers.\newlineg(x)=g(x) = ______\newline
Get tutor helpright-arrow

Posted 4 months ago

Question
Solve for xx.\newlinex2=1x^2 = 1\newline\newlineWrite your answer in simplified, rationalized form.\newlinex=x = ______ or x=x = ______\newline
Get tutor helpright-arrow

Posted 5 months ago

View all (137)

Related topics

Algebra - Order of OperationsAlgebra - Distributive Property`X` and `Y` AxesGeometry - Scalene TriangleCommon MultipleGeometry - Quadrant