Math Problem Statement
How to graph the following linear equations: y = -3/4x + 2, y = 2/5x + 5, y = -4/5x - 1, y = -3x + 1, y = 2x, y = 4?
Solution
The image contains a set of linear equations, each paired with a blank graph. I will now explain how to graph each equation and the steps involved.
Equation 29:
- Slope = : The line will decrease by 3 units vertically for every 4 units it moves to the right.
- Y-intercept = 2: The point where the line crosses the y-axis is at (0, 2).
- Steps:
- Start at (0, 2).
- From (0, 2), move down 3 units and right 4 units to plot another point at (4, -1).
- Draw a line through the points.
Equation 30:
- Slope = : The line increases by 2 units for every 5 units to the right.
- Y-intercept = 5: The point where the line crosses the y-axis is (0, 5).
- Steps:
- Start at (0, 5).
- Move up 2 units and right 5 units to plot another point at (5, 7).
- Draw the line through these points.
Equation 31:
- Slope = : The line decreases by 4 units for every 5 units to the right.
- Y-intercept = -1: The line crosses the y-axis at (0, -1).
- Steps:
- Start at (0, -1).
- Move down 4 units and right 5 units to plot a point at (5, -5).
- Draw the line through these points.
Equation 32:
- Slope = -3: The line decreases by 3 units for every 1 unit to the right.
- Y-intercept = 1: The line crosses the y-axis at (0, 1).
- Steps:
- Start at (0, 1).
- Move down 3 units and right 1 unit to plot another point at (1, -2).
- Draw the line through these points.
Equation 33:
- Slope = 2: The line increases by 2 units for every 1 unit to the right.
- Y-intercept = 0: The line passes through the origin (0, 0).
- Steps:
- Start at (0, 0).
- Move up 2 units and right 1 unit to plot a point at (1, 2).
- Draw the line through these points.
Equation 34:
- This is a horizontal line where , meaning the line passes through all points where the y-coordinate is 4.
- Steps:
- Plot a horizontal line across the graph at .
Would you like me to assist you with graphing any specific equation or provide further details on any part of this process?
5 related questions:
- What is the significance of the slope and y-intercept in a linear equation?
- How does a negative slope affect the direction of the line?
- Can you explain how to identify whether a line is steep or shallow based on its slope?
- What happens to the graph of a line if only the y-intercept changes?
- How do horizontal and vertical lines differ in their equations?
Tip:
Always start by plotting the y-intercept when graphing a linear equation, as it gives you the starting point for drawing the rest of the line.
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Math Problem Analysis
Mathematical Concepts
Linear Equations
Graphing
Coordinate Geometry
Slope-Intercept Form
Formulas
y = mx + b, where m is the slope and b is the y-intercept
Theorems
Slope-Intercept Form Theorem
Suitable Grade Level
Grade 8