Math Problem Statement

Write an equation for the graph below in terms of x.

Solution

The task is to determine the equation of the line displayed in the graph in terms of xx. Let’s analyze the graph step-by-step:

Step 1: Determine the slope (mm)

The slope formula is: m=change in ychange in xm = \frac{\text{change in } y}{\text{change in } x}

Using the points visible on the graph:

  • The line passes through (3,4)(-3, 4) and (3,2)(3, -2).

Calculate the slope: m=243(3)=66=1m = \frac{-2 - 4}{3 - (-3)} = \frac{-6}{6} = -1

Step 2: Determine the y-intercept (bb)

The y-intercept is where the line crosses the yy-axis (x=0x = 0). From the graph, it crosses the yy-axis at b=1b = 1.

Step 3: Write the equation

The equation of the line in slope-intercept form is: y=mx+by = mx + b Substitute m=1m = -1 and b=1b = 1: y=x+1y = -x + 1

Final Answer:

y=x+1y = -x + 1

Let me know if you want further clarifications or detailed explanations!

Expanding the concept:

  1. How can you verify the slope with other points on the line?
  2. What is the importance of identifying the y-intercept?
  3. Could this line be written in another form, such as standard form?
  4. How does the slope change for parallel and perpendicular lines?
  5. What happens to the equation if the graph is shifted up or down?

Tip: Always double-check your slope calculations by selecting two clear points from the graph!

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Graphing

Formulas

Slope formula: m = (change in y) / (change in x)
Slope-intercept form: y = mx + b

Theorems

Properties of linear equations
Slope-intercept theorem

Suitable Grade Level

Grades 8-10