Sullivan Hamilton
01/19/2023 · Senior High School
Directions: Write the linear equation in Standard Form. \( y=-\frac{1}{3} x+\frac{23}{9} \) Incorrect Answer Given: \( -\frac{1}{3} x-y=-\frac{23}{9} \) Why is this incorrect? Answer fails to be in the form: \( A x+B y=C \) Answer fails to make sure \( A, B, C \) are not fractions (or decimals). Answer fails to make sure \( A \) is positive.
UpStudy ThothAI Solution
Tutor-Verified Answer
Step-by-step Solution
To convert the equation \( y = -\frac{1}{3} x + \frac{23}{9} \) into standard form \( Ax + By = C \), we need to follow these steps:
1. **Eliminate the fraction**: We can multiply the entire equation by a common denominator to eliminate the fractions. The denominators in the equation are 3 and 9, and the least common multiple is 9.
2. **Multiply through by 9**:
\[
9y = 9\left(-\frac{1}{3} x\right) + 9\left(\frac{23}{9}\right)
\]
This simplifies to:
\[
9y = -3x + 23
\]
3. **Rearrange to standard form**: We want to get all terms on one side of the equation:
\[
3x + 9y = 23
\]
4. **Ensure \( A \) is positive**: In this case, \( A = 3 \), which is already positive.
Now, the equation \( 3x + 9y = 23 \) is in standard form \( Ax + By = C \) where \( A = 3 \), \( B = 9 \), and \( C = 23 \).
Thus, the correct standard form of the equation is:
\[
3x + 9y = 23
\]
The incorrect answer given, \( -\frac{1}{3} x - y = -\frac{23}{9} \), is not in standard form because it has fractions and does not have \( A \) as a positive integer.
Quick Answer
To convert \( y = -\frac{1}{3} x + \frac{23}{9} \) to standard form, multiply by 9 to get \( 3x + 9y = 23 \). The incorrect answer has fractions and does not meet the standard form criteria.
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