Math Problem Statement

The equation of a line is given below: -12x + 3y = 3. Find the slope and the y-intercept. Then use them to graph the line.

Solution

To solve the given problem, we will:

  1. Rewrite the equation in slope-intercept form (y=mx+by = mx + b).
  2. Identify the slope (mm) and the yy-intercept (bb).
  3. Provide the necessary information to graph the line.

Step 1: Rewrite in slope-intercept form

The equation is: 12x+3y=3-12x + 3y = 3

Add 12x12x to both sides: 3y=12x+33y = 12x + 3

Divide through by 3: y=4x+1y = 4x + 1

Step 2: Identify the slope and yy-intercept

From the equation y=4x+1y = 4x + 1:

  • Slope (mm): 44
  • yy-intercept (bb): 11

Step 3: Instructions to graph

  1. Start by plotting the yy-intercept at (0,1)(0, 1) on the graph.
  2. Use the slope m=4m = 4, which means "rise over run" = 4/14/1. From the point (0,1)(0, 1), move up 4 units and to the right 1 unit to plot another point (1,5)(1, 5).
  3. Draw a straight line through the two points.

Would you like a visual demonstration or further explanation?


Here are 5 related questions for further exploration:

  1. How do you interpret the slope and yy-intercept in a real-world context?
  2. Can you determine the xx-intercept of this line?
  3. What would happen to the graph if the slope were negative?
  4. How would the graph shift if the yy-intercept changed to 2-2?
  5. Can you convert the equation y=4x+1y = 4x + 1 back to standard form?

Tip: Always check your slope direction when plotting the second point to ensure accuracy.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope-Intercept Form
Graphing Lines

Formulas

y = mx + b (Slope-Intercept Form)

Theorems

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Suitable Grade Level

Grades 7-9