Math Problem Statement

Calculate the slope of various linear equations and lines passing through given points. Find missing coordinates using a specified slope.

Solution

Let's work through each question based on the photo.


Question 1: Calculate the Slope

  1. (a) Given the equation 5y=2x+35y = -2x + 3, solve for the slope.

    To find the slope, we need to rewrite the equation in the slope-intercept form y=mx+by = mx + b, where mm represents the slope.

    • Divide both sides by 5: y=25x+35y = -\frac{2}{5}x + \frac{3}{5}
    • The slope mm is 25-\frac{2}{5}.
  2. (b) Graph interpretation: For the graph shown in part (b), we would find two points on the line and use the slope formula y2y1x2x1\frac{y_2 - y_1}{x_2 - x_1} to calculate it. Identify points on the line to calculate the slope accurately.

  3. (c) Find the slope of a line passing through points (3,2)(-3, 2) and (1,2)(1, 2).

    • Use the formula y2y1x2x1\frac{y_2 - y_1}{x_2 - x_1}: slope=221+3=04=0\text{slope} = \frac{2 - 2}{1 + 3} = \frac{0}{4} = 0
    • The slope is 00, indicating a horizontal line.
  4. (d) Find the slope of a line passing through points (2,3)(2, 3) and (1,2)(1, 2).

    • Again, use the slope formula: slope=2312=11=1\text{slope} = \frac{2 - 3}{1 - 2} = \frac{-1}{-1} = 1
    • The slope is 11.

Question 2: Find the Missing Coordinate Using the Given Slope

  1. (a) Given points (q,9)(q, 9) and (3,1)(3, 1) with a slope of 4, solve for qq.

    • Set up the equation for slope: 4=193q4 = \frac{1 - 9}{3 - q}
    • Simplify and solve for qq.
  2. (c) Given points (f,1)(f, -1) and (7,3)(7, 3) with a slope of 2-2, solve for ff.

    • Set up the slope equation: 2=3(1)7f-2 = \frac{3 - (-1)}{7 - f}
    • Simplify and solve for ff.

Would you like me to solve each part in full detail?


Follow-Up Questions:

  1. What is the process to convert an equation into slope-intercept form?
  2. How can you determine the slope from a graph quickly?
  3. What are the characteristics of a line with a zero slope?
  4. What steps are involved in finding a missing coordinate given the slope?
  5. How would you verify your answer for a missing coordinate problem?

Tip:

Remember, in a line equation y=mx+by = mx + b, mm is always the slope and gives you the "rise over run" for any two points on the line.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form
Coordinate Geometry

Formulas

Slope formula: (y2 - y1) / (x2 - x1)
Slope-intercept form of a line: y = mx + b

Theorems

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Suitable Grade Level

Grades 8-10