Question
Find the \( x \) - and \( y \)-intercepts of the graph of \( x-3 y=7 \). State each answer as an or an improper fraction in simplest form.
Ask by King Rodriguez. in the United States
Jan 29,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The \( x \)-intercept is \( \left( \frac{7}{1},\ 0 \right) \) and the \( y \)-intercept is \( \left( 0,\ -\frac{7}{3} \right) \).
Solution
To find the \( x \)- and \( y \)-intercepts of the equation \( x - 3y = 7 \), follow these steps:
### \( x \)-Intercept:
The \( x \)-intercept occurs where \( y = 0 \).
1. Substitute \( y = 0 \) into the equation:
\[
x - 3(0) = 7 \implies x = 7
\]
2. So, the \( x \)-intercept is \( \left( \frac{7}{1},\ 0 \right) \).
### \( y \)-Intercept:
The \( y \)-intercept occurs where \( x = 0 \).
1. Substitute \( x = 0 \) into the equation:
\[
0 - 3y = 7 \implies -3y = 7 \implies y = -\frac{7}{3}
\]
2. So, the \( y \)-intercept is \( \left( 0,\ -\frac{7}{3} \right) \).
### Summary of Intercepts:
- **\( x \)-Intercept:** \( \left( \frac{7}{1},\ 0 \right) \)
- **\( y \)-Intercept:** \( \left( 0,\ -\frac{7}{3} \right) \)
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Extra Insights
To find the \( x \)-intercept of the equation \( x - 3y = 7 \), we set \( y = 0 \). This gives us: \[ x - 3(0) = 7 \quad \Rightarrow \quad x = 7 \] So, the \( x \)-intercept is \( (7, 0) \). Next, to find the \( y \)-intercept, we set \( x = 0 \): \[ 0 - 3y = 7 \quad \Rightarrow \quad -3y = 7 \quad \Rightarrow \quad y = -\frac{7}{3} \] Thus, the \( y \)-intercept is \( \left(0, -\frac{7}{3}\right) \). In summary, the intercepts are \( (7, 0) \) and \( \left(0, -\frac{7}{3}\right) \).