The length of a rectangle is twice its width. The perimeter of the rectangle is 36 cm. Calculate the area of the rectangle
1 answer:
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Answer:
A.
Step-by-step explanation:
We are given the two points (2,7) and (4,-1). In order to determine the linear equation, we need to find the slope and the y-intercept. First, find the slope <em>m.</em> Let (2,7) be x1 and y1, and let (4,-1) be x2 and y2:
Thus, the slope is -4.
Now, to find the y-intercept, we can use the point-slope form. Recall that the point slope form is:
Where (x1, y1) is a coordinate pair and m is the slope.
Use either of the two coordinate pair. I'm going to use (2,7). Substitute them for x1 and y1, respectively:
This is also slope-intercept form. The answer is A.
The relationship between the cost and the miles driven, as presented on the graph is an illustration of a linear equation or a linear graph.
- The growth rate per year is $0.36 per year
- The cost of owning and operating the car is $7201.44
<u>A. The growth per year</u>
This simply means that we calculate the slope (m) of the graph.
This is calculated using:
From the graph, we have:
So, we have:
Hence, the growth per year is: $0.36 per year
<u>B. The cost, when the number of miles is 20004 miles</u>
The equation of a straight line is:
Where:
--- the slope
--- the point where the graph crosses the y-axis.
So, we have:
The cost when the miles driven is 20004, is:
The cost of owning and operating the car is $7201.44
Read more about linear graphs at: