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Question 13 Which equation represents a line passing through the point \( (4,33) \) wuth s slape of 3 ? A) \( y=3 x=15 \) 8) \( y=3 x+33 \) C) \( y=3 x-8 \) D) \( y=3 x+9 \)

Ask by Wade Ingram. in the United States
Feb 03,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

The correct equation is \( y = 3x + 21 \).

Solution

To find the equation of a line that passes through the point \( (4, 33) \) with a slope of \( 3 \), we can use the point-slope form of the equation of a line, which is given by: \[ y - y_1 = m(x - x_1) \] where \( (x_1, y_1) \) is a point on the line and \( m \) is the slope. ### Step 1: Identify the known values - Point \( (x_1, y_1) = (4, 33) \) - Slope \( m = 3 \) ### Step 2: Substitute the values into the point-slope form Substituting the known values into the equation: \[ y - 33 = 3(x - 4) \] ### Step 3: Simplify the equation Now, we will simplify this equation step by step. 1. Distribute the slope on the right side: \[ y - 33 = 3x - 12 \] 2. Add \( 33 \) to both sides to isolate \( y \): \[ y = 3x - 12 + 33 \] \[ y = 3x + 21 \] ### Step 4: Compare with the given options Now, let's compare our derived equation \( y = 3x + 21 \) with the provided options: A) \( y = 3x = 15 \) B) \( y = 3x + 33 \) C) \( y = 3x - 8 \) D) \( y = 3x + 9 \) None of the options match \( y = 3x + 21 \). It seems there might be a mistake in the options provided. ### Conclusion The correct equation of the line passing through the point \( (4, 33) \) with a slope of \( 3 \) is: \[ y = 3x + 21 \] If you have any further questions or need additional assistance, feel free to ask!

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Beyond the Answer

To find the equation of a line with a slope of 3 that goes through the point \( (4, 33) \), you can use the point-slope form of a line: \( y - y_1 = m(x - x_1) \), where \( (x_1, y_1) \) is the point and \( m \) is the slope. Plugging in the values gives: \( y - 33 = 3(x - 4) \). Simplifying this leads to \( y = 3x + 21 \), which isn't listed directly but can lead to the correct adjustments in provided options. In real-world scenarios, lines represent relationships between two variables. For example, if you're studying the relationship between time spent studying (x) and grades achieved (y), knowing the slope gives you an indication of how much the grade will change with each additional hour studied. Here, the more hours you invest, the higher your potential grade can soar!

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