Math Problem Statement

Graph the linear function f(x) = 3 - 6x.

Solution

The given function is f(x)=36xf(x) = 3 - 6x, which is a linear equation in the slope-intercept form f(x)=mx+bf(x) = mx + b, where:

  • mm is the slope,
  • bb is the y-intercept.

For this function:

  • The slope m=6m = -6,
  • The y-intercept b=3b = 3.

Steps to graph:

  1. Plot the y-intercept: The point where the line crosses the y-axis is (0,3)(0, 3).
  2. Use the slope: The slope m=6m = -6 means for every 1 unit you move to the right (positive x-direction), you move 6 units down (negative y-direction). Starting from (0,3)(0, 3), move to the point (1,3)(1, -3).
  3. Draw the line: Connect the points (0,3)(0, 3) and (1,3)(1, -3) with a straight line, and extend it in both directions.

This will give you the graph of the function.

Would you like me to draw the graph for you? If yes, I can generate an image.

Questions:

  1. What is the significance of the slope in a linear equation?
  2. How do we interpret the y-intercept in real-world problems?
  3. How does changing the slope affect the steepness of the line?
  4. What happens to the graph if the y-intercept changes?
  5. Can you find the x-intercept of the given function?

Tip:

To find the x-intercept of any function, set f(x)=0f(x) = 0 and solve for xx.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope-Intercept Form

Formulas

Slope-Intercept Form: y = mx + b
Slope: m = (change in y) / (change in x)

Theorems

Linear Equation Theorem

Suitable Grade Level

Grades 8-10