x - 2y = 0; 6x + 20y = 0; compare with

Understand the Problem

The question is asking us to compare two equations: x - 2y = 0 and 6x + 20y = 0. The objective is likely to analyze these equations for similarities, differences, or solutions.

Answer

The intersection point of the equations is $(0, 0)$.
Answer for screen readers

The point of intersection of the two equations is $(0, 0)$.

Steps to Solve

  1. Rewrite the First Equation in Slope-Intercept Form We start with the first equation $x - 2y = 0$. We want to express it in the form $y = mx + b$, where $m$ is the slope.

Rearranging gives: $$ -2y = -x $$ Dividing by -2, we find: $$ y = \frac{1}{2}x $$

  1. Rewrite the Second Equation in Slope-Intercept Form Next, we move to the second equation $6x + 20y = 0$. Again, we want to convert this to slope-intercept form.

Rearranging gives: $$ 20y = -6x $$ Dividing by 20, we find: $$ y = -\frac{3}{10}x $$

  1. Compare the Slopes Now, we will analyze the slopes of the two equations we derived.

From the first equation, the slope $m_1$ is $\frac{1}{2}$. From the second equation, the slope $m_2$ is $-\frac{3}{10}$.

Since the slopes are different ($\frac{1}{2} \neq -\frac{3}{10}$), the lines represented by these equations will intersect at one point.

  1. Find the Point of Intersection To find the intersection point, we set the two equations equal to each other: $$ \frac{1}{2}x = -\frac{3}{10}x $$

To solve for $x$, add $\frac{3}{10}x$ to both sides: $$ \frac{1}{2}x + \frac{3}{10}x = 0 $$

Converting $\frac{1}{2}$ to have a common denominator of 10: $$ \frac{5}{10}x + \frac{3}{10}x = 0 $$ Combine like terms: $$ \frac{8}{10}x = 0 $$ Thus, $x = 0$.

  1. Find Corresponding y-Value Now that we have $x = 0$, we substitute this back into one of the original equations. Using the first equation: $$ 0 - 2y = 0 \Rightarrow -2y = 0 \Rightarrow y = 0 $$

  2. Final Result The point of intersection of the two lines is $(0, 0)$.

The point of intersection of the two equations is $(0, 0)$.

More Information

The point $(0, 0)$ is the solution where both lines represented by the equations intersect. This means they share this common point in the Cartesian coordinate system.

Tips

  • Confusing the direction of slopes: Remember that a positive slope means an increasing line, while a negative slope means a decreasing line.
  • Miscalculating the intersection: Always double-check arithmetic when substituting values back into the equations.

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