Math Problem Statement

What is the slope of the graph? Leave your answer as a reduced fraction. Identify the y-intercept. Write as a coordinate. Write an equation in slope-intercept form for the graph above.

Solution

Let's solve the questions based on the graph you provided:

  1. Slope Calculation: To find the slope of the line, we can use the formula: m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1} Looking at two clear points on the graph:

    • The line passes through (10,0)(-10, 0) and (0,4)(0, -4).

    Applying these coordinates to the slope formula: m=400(10)=410=25m = \frac{-4 - 0}{0 - (-10)} = \frac{-4}{10} = -\frac{2}{5} So, the slope is 25-\frac{2}{5}.

  2. Y-Intercept: The y-intercept is the point where the line crosses the y-axis. From the graph, the line crosses the y-axis at (0,4)(0, -4). Therefore, the y-intercept is (0,4)(0, -4).

  3. Equation in Slope-Intercept Form: The slope-intercept form of a line is: y=mx+by = mx + b where mm is the slope and bb is the y-intercept.

    We already know that the slope m=25m = -\frac{2}{5} and the y-intercept b=4b = -4. Substituting these values into the equation: y=25x4y = -\frac{2}{5}x - 4

Thus, the answers are:

  • Slope: 25-\frac{2}{5}
  • Y-Intercept: (0,4)(0, -4)
  • Equation: y=25x4y = -\frac{2}{5}x - 4

Would you like any additional details or clarifications? Here are 5 related questions to practice:

  1. What is the slope if the line passes through (2,3)(2, 3) and (4,7)(4, 7)?
  2. How do you calculate the y-intercept from an equation in standard form?
  3. How would the slope and y-intercept change if the line were steeper?
  4. What would the equation be if the slope was positive 25\frac{2}{5}?
  5. How can you convert an equation from slope-intercept form to standard form?

Tip: When calculating slope, always choose points that are easy to read from the graph to avoid mistakes.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Linear Equations
Graphing
Slope-Intercept Form

Formulas

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

Theorems

Coordinate Geometry

Suitable Grade Level

Grades 8-10