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
- 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: $$ y = \frac{1}{2}x $$
- 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: $$ y = -\frac{3}{10}x $$
- 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.
- 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, $x = 0$.
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Find Corresponding y-Value Now that we have $x = 0$, we substitute this back into one of the original equations. Using the first equation: $$ 0 - 2y = 0 \Rightarrow -2y = 0 \Rightarrow y = 0 $$
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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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