/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 8 Determine all intercepts of the ... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Determine all intercepts of the graph of the equation. Then decide whether the graph is symmetric with respect to the \(x\) axis, the \(y\) axis, or the origin. $$ 2 y^{2} x-4 x^{2}=x y^{4} $$

Short Answer

Expert verified
The graph is symmetric about the x-axis and the origin. It has the x-intercept (0,0) and every point (0,y) as y-intercepts.

Step by step solution

01

Find the x-intercepts

To find the x-intercepts, set \( y = 0 \) in the equation and solve for \( x \). Substitute \( y = 0 \) into the given equation: \( 2 \cdot 0^2 \cdot x - 4x^2 = x \cdot 0^4 \). This simplifies to \( -4x^2 = 0 \). Solving this equation gives \( x = 0 \). Thus, the x-intercept is at the origin \((0, 0)\).
02

Find the y-intercepts

To find the y-intercepts, set \( x = 0 \) in the equation and solve for \( y \). Substitute \( x = 0 \) into the equation: \( 2y^2 \cdot 0 - 4 \cdot 0 = 0 \cdot y^4 \), which holds true for any value of \( y \). Hence, every point of the form \((0, y)\) is a y-intercept. Therefore, the entire y-axis is composed of y-intercepts.
03

Simplify the Original Equation

To better analyze symmetry, let's rearrange and factor the given equation: \( 2y^{2}x - xy^{4} = 4x^{2} \). Factor out common terms: \( x(2y^{2} - y^{4}) = 4x^{2} \). Dividing both sides by \( x \) (assuming \( x eq 0 \)): \( 2y^{2} - y^{4} = 4x \).
04

Test for Symmetry about the x-axis

Replace \( y \) with \(-y \) in the equation: \( 2(-y)^{2}x - 4x^{2} = x (-y)^{4} \). Simplifying, we get \( 2y^2x - 4x^{2} = xy^{4} \), which is the same as the original equation. Therefore, the graph is symmetric about the x-axis.
05

Test for Symmetry about the y-axis

Replace \( x \) with \(-x \) in the equation: \( 2y^{2}(-x) - 4(-x)^{2} = -x y^{4} \). This simplifies to \(-2y^2x - 4x^{2} = -xy^4\), which simplifies to the negative of the original equation. Thus, the graph is not symmetric about the y-axis.
06

Test for Symmetry about the Origin

Replace both \( x \) with \(-x \) and \( y \) with \(-y \) in the equation: \( 2(-y)^2(-x) - 4(-x)^2 = -x(-y)^4 \), simplifying to \(-2y^2x - 4x^2 = -xy^4\), which becomes \(2y^2x - 4x^2 = xy^4\), the original equation. Thus, the graph is symmetric about the origin.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

x-intercepts
The x-intercepts of a graph are points where the graph crosses the x-axis. To find them, you set the y variable to zero in the equation and solve for x.
In the given equation, substituting \( y = 0 \) returns: \( 2 \times 0^2 \times x - 4x^2 = x \times 0^4 \). Simplified, this leads to \( -4x^2 = 0 \). The solution \( x = 0 \) indicates an x-intercept at the origin. Thus, the graph has an x-intercept at \( (0, 0) \).
This means the graph only touches the x-axis at the origin point.
y-intercepts
The y-intercepts of a graph occur where the graph meets the y-axis. To discover these, you set x to zero in your equation and resolve for y.
With the current equation, substituting \( x = 0 \) yields: \( 2y^2 \times 0 - 4 \times 0 = 0 \times y^4 \). This remains true across a spectrum of y-values. Consequently, every point along the y-axis, denoted \( (0, y) \), serves as a y-intercept.
Therefore, the entire y-axis acts as a line of y-intercepts, emphasizing how extensively the graph interacts with the y-axis.
equation symmetry
Equation symmetry in a graph determines if the graph appears unchanged following certain transformations.

**Symmetry about the x-axis**:
Substitute y with \(-y\) in the equation to check for symmetry about the x-axis. The calculation: \( 2(-y)^2 x - 4x^2 = x (-y)^4 \) equates to the initial equation, confirming symmetry about the x-axis.

**Symmetry about the y-axis**:
Replace x with \(-x\) in the equation. The equation becomes \( -2y^2 x - 4x^2 = -xy^4 \), yielding a result that is not the same as the original, showing no symmetry about the y-axis.

**Symmetry about the origin**:
For origin symmetry, switch both x and y with \(-x\) and \(-y\) respectively: \( 2 (-y)^2(-x) - 4(-x)^2 = -x (-y)^4 \), resulting in the original equation form. This confirms symmetry about the origin, meaning the graph looks identical on each side when rotated 180 degrees.
graph analysis
Conducting a graph analysis allows you to gather insights into its behavior and features.
By identifying intercepts and understanding symmetry, you can map out the graph's nature.
  • **X-intercepts**: Determines where the graph crosses or touches the x-axis, showing points of zero y-value.
  • **Y-intercepts**: Reveals where the graph intersects the y-axis, highlighting the passage across zero x-values.
  • **Symmetry Analysis**: Understanding symmetry simplifies predicting a graph's complete behavior and understanding its balance about axes or the origin.
Ultimately, such analysis equips you with a firm understanding of how equations transform into graphical representations, revealing a broader context beyond mere equations.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Study anywhere. Anytime. Across all devices.