The equation -1.75 +1.75 represents the cab fare charged by A-Plus Cab Company, where c is the charge in dollars and m is the number of miles traveled. How will the
graph of this equation change if 1.75m changes to 1.25m?
The graph will start lower on the y-axis.
The graph will be flatter.
The graph will start higher on the y-axis
higher
O The graph will be steeper



Answer :

Let's delve into the problem step-by-step:

1. Understanding the Original Equation:
The original equation given is:
[tex]\[ c = -1.75 + 1.75m \][/tex]
In this equation:
- [tex]\( c \)[/tex] represents the total charge in dollars.
- [tex]\( m \)[/tex] represents the number of miles traveled.
- The term [tex]\(-1.75\)[/tex] is the y-intercept, which indicates where the graph crosses the y-axis when [tex]\( m = 0 \)[/tex].
- The term [tex]\(1.75m\)[/tex] represents the slope of the graph.

2. Understanding the Slope:
- The slope of [tex]\( 1.75m \)[/tex] means that for every additional mile traveled, the charge increases by [tex]$1.75. 3. Modification of the Equation: The question states that the coefficient of \( m \) changes from 1.75 to 1.25. Therefore, the new equation will be: \[ c = -1.75 + 1.25m \] Here, the slope has changed to 1.25. 4. Comparing the Slopes: - Original slope: \( 1.75 \) - New slope: \( 1.25 \) Since \( 1.25 \) is less than \( 1.75 \), let's analyze the implication of this change in slope: 5. Impact on the Graph: - Slope: A smaller slope means that for each mile traveled, the charge now increases by a smaller amount ($[/tex]1.25 instead of $1.75).
- Graph Steepness: The graph of the new equation will be less steep than the original graph. In other words, the graph becomes flatter.
- Y-Intercept: Notice that the y-intercept [tex]\(-1.75\)[/tex] remains unchanged, indicating that both graphs will start at the same point on the y-axis (when [tex]\( m = 0 \)[/tex]).

6. Conclusion:
- The y-intercept remains the same, so the graph does not start higher or lower on the y-axis.
- The graph does not become steeper; instead, it becomes flatter due to the reduced slope.

Thus, the correct observation about the change in the graph is:

The graph will be flatter.

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