Math Problem Statement

y=mx+b m=-2 b=2 Solve it and graph it

Solution

The equation you provided is in the slope-intercept form y=mx+by = mx + b, where mm is the slope, and bb is the y-intercept.

Given:

  • m=2m = -2
  • b=2b = 2

The equation becomes: y=2x+2y = -2x + 2

Steps to solve and graph:

  1. Identify key points:

    • The y-intercept occurs when x=0x = 0, so: y=2(0)+2=2y = -2(0) + 2 = 2 Thus, one point on the graph is (0,2)(0, 2).

    • The slope m=2m = -2 means that for every 1 unit increase in xx, yy decreases by 2 units.

  2. Find another point: Choose another value of xx, say x=1x = 1: y=2(1)+2=0y = -2(1) + 2 = 0 So another point is (1,0)(1, 0).

  3. Plot these points: Plot (0,2)(0, 2) and (1,0)(1, 0) on a graph, and draw a straight line through them, which represents the equation y=2x+2y = -2x + 2.

I can also graph this for you if you'd like to see the visual. Would you like a graph?

Here are some questions to think about:

  1. How do changes in slope affect the steepness of the graph?
  2. What would happen if the y-intercept was negative?
  3. What is the significance of the slope in real-life applications?
  4. How does a vertical shift affect the equation of a line?
  5. Can you find the x-intercept of this line?

Tip: The slope tells you how fast the line rises or falls, and the y-intercept tells you where it crosses the y-axis.

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Math Problem Analysis

Mathematical Concepts

Linear Algebra
Slope-Intercept Form
Graphing Lines

Formulas

y = mx + b (Slope-Intercept Form)

Theorems

Slope of a Line

Suitable Grade Level

Grades 6-8