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:
- (x-intercept)
- (y-intercept)
Step 2: Find the slope
The formula for the slope between two points and is:
Substituting the points and :
Thus, the slope .
Step 3: Determine the y-intercept
From the graph, the line crosses the y-axis at , so the y-intercept .
Step 4: Write the equation
Using the slope-intercept form:
Thus, the equation of the line is:
Would you like a detailed explanation of any step?
Here are some related questions you might find interesting:
- How do you find the equation of a line given two points?
- What is the significance of the slope in a linear equation?
- How do you convert from slope-intercept form to standard form?
- How can you determine if two lines are parallel or perpendicular?
- 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.
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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