Math Problem Statement
Carson practices each day to prepare for an upcoming race. He starts the day by running 2 miles and then walking at a rate of 4 miles per hour.
Which representations show the relationship between the total number of miles he covers in a day, y , and the number of hours he walks, x ?
Select THREE correct answers. A.y=2x+4
B. Number of Hours Walked Total Number of Miles 1 6 112 8 2 10
C. D.y=4x+2
E. Number of Hours Walked Total Number of Miles 1 6 112 7 2 8
F.
Solution
Let's analyze the problem carefully to determine which of the given representations are correct.
Carson starts by running 2 miles each day, then walks at a rate of 4 miles per hour. We want to find the total number of miles he covers in a day, based on the number of hours he spends walking.
The equation for this situation can be written as: where:
- represents the miles he runs at the beginning of the day, and
- represents the miles he covers walking at a rate of 4 miles per hour for hours.
Now, let's evaluate the options:
-
Option A:
This equation is incorrect because it suggests that the rate of walking is 2 miles per hour, and the constant distance covered is 4 miles. This does not match the situation described. -
Option B: Number of Hours Walked - Total Number of Miles Table (1, 6; 2, 10)
If , then .
If , then .
This matches the table, so this is a correct representation. -
Option C: (No clear content, but if it matches , it could be correct.)
We need more information to assess Option C. -
Option D:
This equation correctly represents the situation: 4 miles per hour walking rate multiplied by the number of hours , plus 2 miles that he starts with. This is correct. -
Option E: Number of Hours Walked - Total Number of Miles Table (1, 6; 2, 8)
If , then , which is correct. But if , then , not 8. Therefore, this is incorrect. -
Option F: (No content provided here, so cannot be evaluated.)
Correct Answers
Based on the analysis:
- B (Correct table)
- D (Correct equation)
- If more information aligns with , possibly C or F could be correct.
Would you like further details or have any questions?
Related Questions:
- What would the equation be if Carson runs 3 miles instead of 2?
- How would the graph of look like on a coordinate plane?
- How can we determine if a table correctly represents a linear equation?
- What happens to the total distance if Carson increases his walking speed?
- How would the equation change if Carson also bikes at a different rate?
Tip:
Always substitute values back into an equation to verify if a given representation (table or equation) matches the described situation.
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Math Problem Analysis
Mathematical Concepts
Linear Equations
Algebra
Word Problems
Formulas
y = 2 + 4x
Theorems
Slope-Intercept Form
Suitable Grade Level
Grades 6-8