Math Problem Statement

Which statement is true about the slopes of Function A and Function B, where Function A is represented by a graph and Function B by the equation y = 5x - 1?

Solution

The problem shows two linear functions, A and B:

  • Function A is represented by the graph.
  • Function B is given by the equation y=5x1y = 5x - 1.

We are tasked with comparing the slopes of these two functions.

1. Slope of Function A (from the graph):

To find the slope of Function A, we can use two points on the line from the graph. Let's choose:

  • Point 1: (0,6)(0, -6) (the y-intercept)
  • Point 2: (4,4)(4, 4)

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 values from the two points: m=4(6)40=4+64=104=2.5m = \frac{4 - (-6)}{4 - 0} = \frac{4 + 6}{4} = \frac{10}{4} = 2.5 So, the slope of Function A is 2.52.5.

2. Slope of Function B (from the equation):

The slope-intercept form of a line is y=mx+by = mx + b, where mm is the slope. From the equation y=5x1y = 5x - 1, we can see that the slope of Function B is 55.

Comparison:

  • The slope of Function A is 2.52.5.
  • The slope of Function B is 55.

Therefore, the slope of Function A is less than the slope of Function B.

The correct answer is: The slope of Function A is less than the slope of Function B.


Would you like more details or have any questions?

Here are five related questions to deepen your understanding:

  1. How do we interpret the y-intercept of a linear function?
  2. What is the significance of the slope in real-world contexts?
  3. Can you explain how to convert a graph into an equation?
  4. How would the graph of Function B look compared to Function A?
  5. How do we determine if two lines are parallel based on their slopes?

Tip: For any linear equation, the number next to xx is always the slope.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope
Graph Interpretation

Formulas

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

Theorems

Slope of a Line

Suitable Grade Level

Grades 7-9