Consider the function represented by the equation y minus 6 x minus 9 = 0. Which answer shows the equation written in function n
2 answers:
Answer: First option.
Step-by-step explanation:
You know that the function represented by the equation is the following:
Then, you can follow these steps in order write the equation in function notation with "x" as the independent variable:
1. Solve for "y":
Add to both sides:
Add 9 to both sides:
2. Since is a common way of representing "y", you get:
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160 = 100%
56 = x%
then you would cross multiply
160x = 56(100)
160x = 5600
x =
x = 35
so
35% of 160 is 56.
56 = x%
then you would cross multiply
160x = 56(100)
160x = 5600
x =
x = 35
so
35% of 160 is 56.
Answer:
y = √(5x+34)
Step-by-step explanation:
The regression formula that matches a square root function to these points can be worked out by a suitable calculator. The attachments shows the points are matched exactly by the function ...
y = √(5x+34)
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If you would like to work this by hand, you can put the (x, y) point values into the proposed equation and see what the coefficients need to be:
y = √(ax +b)
7 = √(3a +b) ⇒ 49 = 3a +b
8 = √(6a +b) ⇒ 64 = 6a +b
Subtracting the first equation from the second, gives ...
(64) -(49) = (6a +b) -(3a +b)
15 = 3a ⇒ a = 5
49 = 3(5) +b ⇒ b = 34
