What is the equation of the line that passes through the point (4, 12) and has a y-intercept of -2?
1 answer:
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Step-by-step explanation:
We need to find an expression for .
We can solve it as follows.
We know that,
So,
or
Hence, this is the required solution.
Answer:
1) B. on, 2) D. 19.2, 3) C. 0
Step-by-step explanation:
1) The value of y according to the regression line is:
Hence, the point (8,19.2) is <em>on </em>the least-squares regression line.
2) The value of y according to the regression line is 19.2.
3) The residual is the difference between the value from the regression line and the real value. In this case, the residual value is 0.
Answer:
Explanation:
You are comparing irrational numbers.
By inspection, i.e. at first sight you can only compare because they have the same radicand.
You can order:
You can introduce the 2 inside the radical by squaring it:
Since 5 is between 3 and 12, you can order:
Which is:
You must know that π ≈ 3.14.
5 is less than 9 and the square root of 9 is 3; hence, and
Now you must determine whether π is less than or greater than
Using a calculator or probing numbers between 3 and 4 you get
Hence, the complete order is: