Math Problem Statement

Graph the equation y = 4x - 5 and analyze its key features.

Solution

You have uploaded an image that includes the equation y=4x5y = 4x - 5 and a coordinate plane. Let's analyze and graph the line corresponding to this equation step by step.

Step 1: Identify the equation form

The given equation y=4x5y = 4x - 5 is in slope-intercept form, which is:

y=mx+by = mx + b

Where:

  • mm is the slope (rate of change).
  • bb is the y-intercept (the point where the line crosses the y-axis).

From the equation:

  • Slope m=4m = 4: This means that for every 1 unit increase in xx, yy increases by 4.
  • Y-intercept b=5b = -5: The line crosses the y-axis at the point (0,5)(0, -5).

Step 2: Plot the y-intercept

The y-intercept is (0,5)(0, -5). On the graph, locate the point where the line crosses the y-axis, which is at y=5y = -5.

Step 3: Use the slope to find another point

The slope is 4, meaning that for every 1 unit increase in xx, yy increases by 4. Starting from (0,5)(0, -5):

  • Move 1 unit to the right on the x-axis (from x=0x = 0 to x=1x = 1).
  • Then move 4 units up on the y-axis (from y=5y = -5 to y=1y = -1).

So another point on the line is (1,1)(1, -1).

Step 4: Draw the line

Connect the points (0,5)(0, -5) and (1,1)(1, -1) with a straight line. Extend the line in both directions to complete the graph of the equation y=4x5y = 4x - 5.

Step 5: Positive Slope Confirmation

The word "positive" written near the equation is a reminder that the line has a positive slope, meaning it increases as xx increases, which is correct for this graph.


Would you like more details or have any questions about this graph or the equation? Here are 5 related questions for further exploration:

  1. What would the graph look like if the slope was negative instead of positive?
  2. How would the graph change if the y-intercept was 0 instead of -5?
  3. Can you determine the x-intercept of this line, where y=0y = 0?
  4. How can you find the equation of a line parallel to y=4x5y = 4x - 5?
  5. How would you graph the line if the equation was in point-slope form instead of slope-intercept form?

Tip: The slope tells you how steep the line is—higher absolute values of slope indicate a steeper line!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Graphing

Formulas

Slope-Intercept Form: y = mx + b

Theorems

Slope and Y-Intercept Theorem

Suitable Grade Level

Grades 8-10