Answer:
y=2x+2
Step-by-step explanation:
convert x-2y=7 into slope intercept form
then your new slope is the reciprocal of the original function then substitute
x and y values to find b.
Think about rise over run. Make the -4 a fraction into -4/1. Rise is the first, so you go down 4 pts down. Then run is 1, so you go 1 right. In this case, there is no beginning, so you begin at 0. The coordinates will be (0, 0) and (1, -4). You got the graph.
Answer:
11
Step-by-step explanation:
Данный,
x + 7 = 18
=> x = 18 - 7
=> <u>x = 11 (Отвечать)</u>
Answer:
b. x=10
x is greater than or equal to 8 so I believe that 10 is the best answer
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 />
<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