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Question 10 of 14, Step 1 of 1 Find the equation in slope-intercept form for the line passing through the points with the given coordinates. Answer

Ask by Estrada Washington. in the United States
Feb 03,2025

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Answer

To find the equation of a line in slope-intercept form (\( y = mx + b \)) passing through two points, follow these steps: 1. **Identify the Points:** Let the points be \( P_1(x_1, y_1) \) and \( P_2(x_2, y_2) \). 2. **Calculate the Slope (\( m \)):** \[ m = \frac{y_2 - y_1}{x_2 - x_1} \] 3. **Use the Slope-Intercept Form:** \[ y = mx + b \] 4. **Find the Y-Intercept (\( b \)):** Substitute one point into the equation to solve for \( b \): \[ b = y_1 - m \cdot x_1 \] 5. **Write the Final Equation:** Plug \( m \) and \( b \) back into the slope-intercept form. **Example:** For points \( (2, 3) \) and \( (4, 7) \): - Slope \( m = 2 \) - Y-intercept \( b = -1 \) - Equation: \( y = 2x - 1 \) Provide the specific points to get the exact equation.

Solution

Sure, I'd be happy to help you find the equation of the line in slope-intercept form (\( y = mx + b \)) that passes through two given points. To provide an accurate answer, I'll need the coordinates of those points. However, I can guide you through the general steps to find the equation: ### Steps to Find the Equation of a Line Passing Through Two Points 1. **Identify the Coordinates:** Let's denote the two points as \( P_1(x_1, y_1) \) and \( P_2(x_2, y_2) \). 2. **Calculate the Slope (\( m \)):** The slope of the line is determined by the change in \( y \) divided by the change in \( x \): \[ m = \frac{y_2 - y_1}{x_2 - x_1} \] 3. **Use the Slope-Intercept Form:** The slope-intercept form of a line is: \[ y = mx + b \] You already have \( m \) from the previous step. 4. **Solve for the Y-Intercept (\( b \)):** Substitute one of the points and the slope into the equation to solve for \( b \): \[ y_1 = m \cdot x_1 + b \\ b = y_1 - m \cdot x_1 \] 5. **Write the Final Equation:** Plug the values of \( m \) and \( b \) back into the slope-intercept form to get the equation of the line. ### Example Let's go through an example for clarity. **Given Points:** - \( P_1(2, 3) \) - \( P_2(4, 7) \) **1. Calculate the Slope (\( m \)):** \[ m = \frac{7 - 3}{4 - 2} = \frac{4}{2} = 2 \] **2. Use the Slope-Intercept Form:** \[ y = 2x + b \] **3. Solve for \( b \) Using Point \( P_1(2, 3) \):** \[ 3 = 2 \cdot 2 + b \\ 3 = 4 + b \\ b = 3 - 4 \\ b = -1 \] **4. Write the Final Equation:** \[ y = 2x - 1 \] So, the equation of the line passing through the points \( (2, 3) \) and \( (4, 7) \) is \( y = 2x - 1 \). ### If You Provide the Coordinates If you provide the specific coordinates of the two points you're working with, I can give you a tailored solution to find the exact equation of the line passing through them.

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To find the equation in slope-intercept form (y = mx + b) for a line passing through two points, start by determining the slope (m) using the formula \(m = \frac{y_2 - y_1}{x_2 - x_1}\). For example, if the points are (2, 3) and (4, 7), the slope would be \(m = \frac{7 - 3}{4 - 2} = 2\). Once you have the slope, use one of the points and substitute it into the slope-intercept form to solve for b (the y-intercept). If we use point (2, 3), we'd plug in the values as follows: \(3 = 2(2) + b\), which simplifies to \(b = -1\). Thus, the equation becomes \(y = 2x - 1\).

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