Let's solve the equation \( 8x - 4y = 24 \) step by step to determine who changed the equation correctly.
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Subtract \( 8x \) from both sides:
\[ -4y = -8x + 24 \]
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Divide by -4 on both sides:
\[ y = \frac{-8x}{-4} + \frac{24}{-4} \] \[ y = 2x - 6 \]
So, the correct slope-intercept form of the equation is \( y = 2x - 6 \).
Now, let's review the answers given by Bob, Bill, and Bud:
- Bob: \( y = 2x - 6 \) (Correct)
- Bill: \( y = -4x \) (Incorrect)
- Bud: \( y = 2x + 24 \) (Incorrect)
Based on the above analysis, Bob changed the equation correctly.
Final Answer: Bob