Math Problem Statement
Solution
To determine which statement is true about the linear functions A and B, let's analyze the information given in the table and graph.
Function A (from the table):
The table provides pairs of values for function A.
2 | 4 | |||
---|---|---|---|---|
0 |
Step 1: Find the slope of Function A
To find the slope , we use the formula: Using the points and , we calculate: So, the slope of Function A is , which is positive.
Step 2: Find the y-intercept of Function A
The y-intercept is the value of when . From the table, when , . Thus, the y-intercept of Function A is .
Function B (from the graph):
From the graph of Function B, we can visually identify that it has a negative slope because it slopes downward from left to right. We can also see that the graph crosses the y-axis at , meaning the y-intercept of Function B is .
Step 3: Find the slope of Function B
Using two points on the graph, say and , we calculate the slope : Thus, the slope of Function B is , which is negative.
Now, let's review the options:
- The y-intercepts of the functions have opposite signs – False. The y-intercept of Function A is 0, and for Function B, it's 4. These are not opposite in sign.
- The slope of each function is negative – False. The slope of Function A is positive , while the slope of Function B is negative .
- The y-intercept of Function A is farther from the origin than the y-intercept of Function B – False. The y-intercept of Function A is , which is closer to the origin than the y-intercept of Function B ().
- The slope of Function A is less steep than the slope of Function B – True. The slope of Function A is , which is less steep than the slope of Function B, which is .
Conclusion:
The correct statement is: The slope of Function A is less steep than the slope of Function B.
Would you like further details on any of these steps? Here are some related questions:
- How can we further analyze the relationship between slopes and steepness of functions?
- Why does the sign of the slope affect the direction of the line on the graph?
- What happens when the y-intercept is zero in a function?
- How do changes in the x-values affect the calculation of the slope in a linear function?
- Can we compare the rate of change between two linear functions based solely on their slopes?
Tip: Always remember that a more negative slope results in a steeper downward slope, while a more positive slope results in a steeper upward slope.
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Math Problem Analysis
Mathematical Concepts
Linear Functions
Slope
Y-Intercept
Formulas
Slope Formula: m = (y2 - y1) / (x2 - x1)
Theorems
Slope-Intercept Form (y = mx + b)
Suitable Grade Level
Grades 8-10