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Solve by graphing: \( \frac{9 x-5}{3 x+1}=4 \)

Ask by Frank Olson. in the United States
Jan 25,2025

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Tutor-Verified Answer

Answer

\( x=-3 \)

Solution

Solve the equation \( \frac{9x-5}{3x+1}=4 \). Solve the equation by following steps: - step0: Solve for \(x\): \(\frac{9x-5}{3x+1}=4\) - step1: Find the domain: \(\frac{9x-5}{3x+1}=4,x\neq -\frac{1}{3}\) - step2: Cross multiply: \(9x-5=\left(3x+1\right)\times 4\) - step3: Simplify the equation: \(9x-5=4\left(3x+1\right)\) - step4: Expand the expression: \(9x-5=12x+4\) - step5: Move the expression to the left side: \(9x-12x=4+5\) - step6: Add and subtract: \(-3x=4+5\) - step7: Add and subtract: \(-3x=9\) - step8: Change the signs: \(3x=-9\) - step9: Divide both sides: \(\frac{3x}{3}=\frac{-9}{3}\) - step10: Divide the numbers: \(x=-3\) - step11: Check if the solution is in the defined range: \(x=-3,x\neq -\frac{1}{3}\) - step12: Find the intersection: \(x=-3\) The solution to the equation \( \frac{9x-5}{3x+1}=4 \) by graphing is \( x=-3 \).

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Mind Expander

To solve the equation \( \frac{9x - 5}{3x + 1} = 4 \) by graphing, first rewrite the equation in a suitable form for graphing: 1. Rearrange the equation: \( 9x - 5 = 4(3x + 1) \) 2. Expand the right side: \( 9x - 5 = 12x + 4 \) 3. Move all terms involving \( x \) to one side and constants to the other: \( 9x - 12x = 4 + 5 \) which simplifies to \( -3x = 9 \) 4. Divide by -3: \( x = -3 \) Now, to graph it, plot the equation \( y = \frac{9x - 5}{3x + 1} \) and the line \( y = 4 \). The intersection of these two graphs will give the solution, which is \( x = -3 \). You can use graphing tools like Desmos or even graph it on paper to visualize how both functions interact and identify where they meet! And voilà, you now have a clear and engaging way to find the solution by graph!

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