Math Problem Statement

Find the slope and y-intercept of the line whose graph is shown to the right. Then use these to write an equation of the line.

Solution

The image you provided shows a problem asking for the slope and y-intercept of the line on the graph, followed by writing the equation of the line in slope-intercept form.

Here’s the solution outlined in the image:

  1. Slope (m): The slope is given as 2. This is the rate of change of the line, meaning for every unit increase in xx, yy increases by 2.

  2. Y-intercept (b): The y-intercept is given as the point (0,6)(0, 6), meaning the line crosses the y-axis at y=6y = 6.

  3. Equation of the line: Using the slope-intercept form y=mx+by = mx + b, where mm is the slope and bb is the y-intercept, the equation of the line is: y=2x+6y = 2x + 6 This equation means that as xx increases, yy increases according to the slope of 2, and the line crosses the y-axis at y=6y = 6.

Would you like more detailed steps or any further explanation on any part?

Here are five related questions to expand on this concept:

  1. What is the general formula for finding the slope between two points on a line?
  2. How do you identify the slope of a horizontal or vertical line from its graph?
  3. Can you rewrite the equation y=2x+6y = 2x + 6 in standard form?
  4. How would the graph change if the slope were negative?
  5. If the y-intercept were (0,4)(0, -4) instead of (0,6)(0, 6), how would the equation change?

Tip: In slope-intercept form y=mx+by = mx + b, always remember that mm is the slope and bb is the y-intercept. This form makes it easy to graph the equation.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form

Formulas

Slope formula: m = (y2 - y1) / (x2 - x1)
Slope-Intercept form: y = mx + b

Theorems

Concept of slope and intercept
Equation of a line in slope-intercept form

Suitable Grade Level

Grades 6-8