Math Problem Statement

What is the equation of the straight line shown below? Give your answer in the form y = mx + c, where m and c are integers or fractions in their simplest forms.

Solution

Let's analyze the given graph and determine the equation of the straight line.

Step 1: Identify two points on the line

From the graph, two points the line passes through are:

  • (6,0)(-6, 0) (x-intercept)
  • (0,6)(0, 6) (y-intercept)

Step 2: Find the slope mm

The formula for the slope between two points (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) is:

m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}

Substituting the points (6,0)(-6, 0) and (0,6)(0, 6):

m=600(6)=66=1m = \frac{6 - 0}{0 - (-6)} = \frac{6}{6} = 1

Thus, the slope m=1m = 1.

Step 3: Determine the y-intercept cc

From the graph, the line crosses the y-axis at y=6y = 6, so the y-intercept c=6c = 6.

Step 4: Write the equation

Using the slope-intercept form:

y=mx+cy = mx + c

y=1x+6y = 1x + 6

Thus, the equation of the line is:

y=x+6\mathbf{y = x + 6}


Would you like a detailed explanation of any step?

Here are some related questions you might find interesting:

  1. How do you find the equation of a line given two points?
  2. What is the significance of the slope in a linear equation?
  3. How do you convert from slope-intercept form to standard form?
  4. How can you determine if two lines are parallel or perpendicular?
  5. What is the role of the y-intercept in real-life applications?

Tip: When identifying points on a graph, always look for clear grid intersections to ensure accuracy.

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 = (y2 - y1) / (x2 - x1)
Slope-intercept form: y = mx + c

Theorems

Slope formula

Suitable Grade Level

Grades 8-10