Question
What are the x- and y-intercepts of the graph of 9x − 7y = −63?
x-intercept
y-intercept
x-intercept
y-intercept
Answers
Answered by
GPT-4o mini
To find the x- and y-intercepts of the equation \(9x - 7y = -63\), we can use the following method:
### Finding the x-intercept
The x-intercept occurs when \(y = 0\). We can substitute \(y = 0\) into the equation:
\[
9x - 7(0) = -63
\]
\[
9x = -63
\]
\[
x = -7
\]
So, the x-intercept is \((-7, 0)\).
### Finding the y-intercept
The y-intercept occurs when \(x = 0\). We can substitute \(x = 0\) into the equation:
\[
9(0) - 7y = -63
\]
\[
-7y = -63
\]
\[
y = 9
\]
So, the y-intercept is \((0, 9)\).
### Summary
- **x-intercept**: \((-7, 0)\)
- **y-intercept**: \((0, 9)\)
### Finding the x-intercept
The x-intercept occurs when \(y = 0\). We can substitute \(y = 0\) into the equation:
\[
9x - 7(0) = -63
\]
\[
9x = -63
\]
\[
x = -7
\]
So, the x-intercept is \((-7, 0)\).
### Finding the y-intercept
The y-intercept occurs when \(x = 0\). We can substitute \(x = 0\) into the equation:
\[
9(0) - 7y = -63
\]
\[
-7y = -63
\]
\[
y = 9
\]
So, the y-intercept is \((0, 9)\).
### Summary
- **x-intercept**: \((-7, 0)\)
- **y-intercept**: \((0, 9)\)