Math Problem Statement

Gambar grafik dari persamaan garis lurus berikut: y = 3x - 5

Solution

The task is to graph the linear equation y=3x5y = 3x - 5 and fill in the table of values for xx and yy.

Step-by-Step Solution:

  1. Select values of xx: To graph the equation, let's select a few values for xx, calculate the corresponding yy-values using the equation, and then plot these points on the graph.

    Let's choose x=2,0,2x = -2, 0, 2.

  2. Calculate yy-values: Using the equation y=3x5y = 3x - 5:

    • When x=2x = -2, y=3(2)5=65=11y = 3(-2) - 5 = -6 - 5 = -11
    • When x=0x = 0, y=3(0)5=5y = 3(0) - 5 = -5
    • When x=2x = 2, y=3(2)5=65=1y = 3(2) - 5 = 6 - 5 = 1
  3. Table of values:

    xxyy
    -2-11
    0-5
    21
  4. Plot the points: Now, plot the points (2,11)(-2, -11), (0,5)(0, -5), and (2,1)(2, 1) on the graph. After plotting, draw a straight line through these points to represent the equation y=3x5y = 3x - 5.

Would you like more details on how to draw the graph, or do you have any questions?


Here are 5 related questions to expand your understanding:

  1. What is the slope of the line in the equation y=3x5y = 3x - 5?
  2. How would the graph change if the equation were y=3x+5y = 3x + 5 instead?
  3. What is the y-intercept of the line y=3x5y = 3x - 5, and how do you find it?
  4. Can you explain how the slope influences the steepness of the line?
  5. How would you graph y=3x+5y = -3x + 5 on the same set of axes?

Tip: When graphing linear equations, picking xx-values near the y-intercept often gives clearer and more accurate plots!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations

Formulas

y = mx + b

Theorems

Slope-intercept form

Suitable Grade Level

Grades 7-9