Which of the following is the equation for the graph shown?
1 answer:
The equation of the circle shown is:
The equation of a circle of center and radius r is given by:
From the graph, it can be seen that the center of the circle is (0,0), thus and the radius is of r = 10, hence the equation is:
You can learn more about the equation of a circle at brainly.com/question/24307696
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Answer:
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Step-by-step explanation:
Given
In 1990; Income= $39000
In 2010; Income= $70768
Solving (a): An equation in form of f(x) = ax + b
First, we need to determine the slope, a
Taking y as income and x as year index.
When x = 0; y = 39000
When x = 20; y = 70768
Substitute these values in the above formula
Next, is to determine the formula using:
<em>Considering :When x = 0; y = 39000, we have</em>
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<em>Make y the subject of formula</em>
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<em>Express y as a function of x</em>
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Solving (b): Income in 2005
<em>In 2005, x = 15</em>
So:
becomes
