Question
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Find the equation of the line, in the form \( y=m x+b \), or \( x=c \), having the given properties. Perpendicular to the line \( y=2 x+4 \) and passing through \( (-2,2) \). \( y= \)

Ask by Mejia Daniels. in the United States
Jan 23,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

The equation of the line is \( y = -\frac{1}{2}x + 1 \).

Solution

To find the equation of the line that is perpendicular to \( y = 2x + 4 \) and passes through the point \( (-2, 2) \), follow these steps: 1. **Determine the slope of the given line:** The given line is in the slope-intercept form \( y = mx + b \), where \( m \) is the slope. \[ m = 2 \] 2. **Find the slope of the perpendicular line:** Perpendicular lines have slopes that are negative reciprocals of each other. Therefore, the slope \( m' \) of the perpendicular line is: \[ m' = -\frac{1}{2} \] 3. **Use the point-slope form to find the equation of the perpendicular line:** The point-slope form is: \[ y - y_1 = m'(x - x_1) \] Plugging in the slope \( m' = -\frac{1}{2} \) and the point \( (-2, 2) \): \[ y - 2 = -\frac{1}{2}(x + 2) \] 4. **Simplify to the slope-intercept form \( y = mx + b \):** \[ y - 2 = -\frac{1}{2}x - 1 \] \[ y = -\frac{1}{2}x - 1 + 2 \] \[ y = -\frac{1}{2}x + 1 \] **Final Equation:** \[ y = -\frac{1}{2}x + 1 \]

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Beyond the Answer

To find the equation of the line perpendicular to \( y=2x+4 \), we first need to determine the slope of the original line. The slope (m) is 2, so the slope of the perpendicular line will be the negative reciprocal, which is \( -\frac{1}{2} \). Now we can use the point-slope form to find the equation of the line. The point-slope form is given by: \[ y - y_1 = m(x - x_1) \] Substituting \( m = -\frac{1}{2} \) and the point \( (-2, 2) \): \[ y - 2 = -\frac{1}{2}(x + 2) \] Simplifying this gives: \[ y - 2 = -\frac{1}{2}x - 1 \] \[ y = -\frac{1}{2}x + 1 \] So, the equation of the line in the form \( y = mx + b \) is: \[ y = -\frac{1}{2}x + 1 \]

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