Math Problem Statement

The graph represents the solution set of which of the following equations: a) 2x - 3y = 0 b) y = (3/2)x - 3 c) y = (2/3)x + 2 d) x = (-2/3)y - 3

Solution

We are given a graph and asked to identify which of the listed equations corresponds to the graphed line.

Let's analyze the graph:

  • The line crosses the y-axis at y=2y = 2, which suggests the y-intercept is 2.
  • The slope of the line appears to be positive since the line rises as it moves from left to right.
  • Counting the rise over run, we observe that the slope is 23\frac{2}{3}.

The equation of a line is generally expressed as y=mx+by = mx + b, where:

  • mm is the slope.
  • bb is the y-intercept.

From the graph:

  • Slope m=23m = \frac{2}{3}.
  • Y-intercept b=2b = 2.

Thus, the equation of the line should be y=23x+2y = \frac{2}{3}x + 2, which matches option c).

Conclusion: The correct answer is c) y=23x+2y = \frac{2}{3}x + 2.

Do you want further details or have any questions?

Here are 5 related questions to deepen understanding:

  1. How do you calculate the slope from a graph?
  2. How would the graph change if the slope were negative?
  3. What would the equation of the line be if the y-intercept were at 3-3 instead of 22?
  4. How does the standard form of a linear equation relate to the slope-intercept form?
  5. What is the significance of the y-intercept in a linear equation?

Tip: Always check both the slope and the y-intercept when matching a graph to an equation.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Graphing
Slope-Intercept Form

Formulas

Slope-intercept form: y = mx + b
Slope: m = rise/run

Theorems

Equation of a straight line

Suitable Grade Level

Grades 8-10