Math Problem Statement

Graph the linear equation y = -3/4x - 1.

Solution

To graph the equation y=34x1y = -\frac{3}{4}x - 1, let's follow these steps:

  1. Identify the y-intercept: The equation is in slope-intercept form y=mx+by = mx + b, where mm is the slope and bb is the y-intercept. Here, b=1b = -1. So, the y-intercept is at the point (0,1)(0, -1).

  2. Plot the y-intercept: Place a point on the graph at (0,1)(0, -1).

  3. Determine the slope: The slope m=34m = -\frac{3}{4} means that for every 4 units you move to the right, you move 3 units down (because the slope is negative).

  4. Use the slope to find another point:

    • Starting from (0,1)(0, -1), move 4 units to the right (positive x-direction) to (4,1)(4, -1).
    • Then move 3 units down (negative y-direction), arriving at the point (4,4)(4, -4).
  5. Plot the second point: Place a point on the graph at (4,4)(4, -4).

  6. Draw the line: Connect the two points (0,1)(0, -1) and (4,4)(4, -4) with a straight line. This line represents the graph of y=34x1y = -\frac{3}{4}x - 1.

Would you like a detailed explanation of the process or have any questions?


Here are 5 questions that build on this information:

  1. How would the graph change if the slope were positive?
  2. What would be the new y-intercept if the equation were y=34x+2y = -\frac{3}{4}x + 2?
  3. How do we find the x-intercept for this equation?
  4. How does changing the slope affect the steepness of the line?
  5. How can we use another form of the equation, such as point-slope form, to plot the graph?

Tip: Always remember that the sign of the slope indicates the direction of the line: positive slopes rise, while negative slopes fall as you move from left to right.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Graphing

Formulas

Slope-intercept form y = mx + b

Theorems

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Suitable Grade Level

Grades 8-10