Math Problem Statement

Graph the line with the equation y = -4/3x + 1.

Solution

To graph the line with the equation y=43x+1y = -\frac{4}{3}x + 1, let's break down the steps:

  1. Identify the Slope and 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, m=43m = -\frac{4}{3} and b=1b = 1.
    • This means the line has a slope of 43-\frac{4}{3} and crosses the y-axis at (0,1)(0, 1).
  2. Plot the Y-Intercept:

    • Start by plotting the point (0,1)(0, 1) on the y-axis.
  3. Use the Slope to Find Another Point:

    • The slope 43-\frac{4}{3} tells us that for every 3 units we move to the right (positive xx-direction), we move 4 units down (negative yy-direction).
    • From (0,1)(0, 1), move 3 units right to x=3x = 3 and 4 units down to y=3y = -3. This gives the point (3,3)(3, -3).
  4. Plot the Second Point and Draw the Line:

    • Plot the point (3,3)(3, -3).
    • Draw a straight line through these two points, extending it in both directions.

This graph represents the line for the equation y=43x+1y = -\frac{4}{3}x + 1.

Would you like a detailed explanation of any of these steps?

Here are some related questions to expand on this:

  1. How would the graph change if the slope were positive?
  2. What happens to the graph if the y-intercept changes?
  3. How can we graph a line given a point and a slope?
  4. How do we find the x-intercept of a line given its equation?
  5. How does changing the slope affect the steepness of the line?

Tip: The slope determines the direction and steepness of a line. A negative slope means the line descends 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