X*15=y is that what you need
The option fourth "There is a strong negative relationship between x and y" is correct.
<h3>What is correlation?</h3>
It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.
![\rm r = \dfrac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{{[n\sum x^2- (\sum x)^2]}}\sqrt{[n\sum y^2- (\sum y)^2]}}](https://tex.z-dn.net/?f=%5Crm%20r%20%3D%20%5Cdfrac%7Bn%28%5Csum%20xy%29-%28%5Csum%20x%29%28%5Csum%20y%29%7D%7B%5Csqrt%7B%7B%5Bn%5Csum%20x%5E2-%20%28%5Csum%20x%29%5E2%5D%7D%7D%5Csqrt%7B%5Bn%5Csum%20y%5E2-%20%28%5Csum%20y%29%5E2%5D%7D%7D)
The options are:
- There is no relationship between x and y.
- There is a weak negative relationship between x and y.
- There is a strong positive relationship between x and y.
- There is a strong negative relationship between x and y.
We have data:
x 7 8 9 10 11 12 13
y 13 10 7 6 5 3 0
The value of correlation r = -0.9847
As we know the value of r between -1 to +1
If r = 1 (perfect and positive correlation)
if r = -1 (perfect and negative correlation)
We have r = -0.9847
The value is near to -1 which means there is a strong negative relationship between x and y.
Thus, the option fourth "There is a strong negative relationship between x and y" is correct.
Learn more about the correlation here:
brainly.com/question/11705632
#SPJ1
- 6x11/ 7x3
- 2x11/ 7
- 22/7
Answer:
Step-by-step explanation:
False f(x) is not a function as there are multiple solutions for f(6.5)
True f(4) = 225
True f(a) = 50 has no solution as we are given no information as to what "a" is.
Even f(x) = 50 has no solution in the domain provided
False f(1) = 250
False f(100) is beyond the domain of the plot. Even if the plot repeats, it never gets down to 6.5...and how does one end up with a half a can, anyway?
False The plot never intersects the x axis
True F(0) = 250
True Seems to me the graph is a tell-all...not being discrete at all
(Joke) :)
Actually the graph lines are not correct. The data is number of cans, plotted against time. While time is continuous, cans must be sold in units. The plot points are valid, but the lines between them are just wishful thinking. If we ignore the lines, the plot is discrete.
True There are 300 cans in the machine at 1:30 pm
False 0 ≤ t ≤ 12 hrs is the domain
True f(10) = f(12) and all points between them have a value of 250
True graph slopes from f(2) to f(6.5) have negative values.
<span><span><span><span>The word "slope" may also be referred to as "gradient", "incline" or "pitch", and be expressed as:
A special circumstance exists when working with straight lines (linear functions), in that the "average rate of change" (the slope) is </span>constant.<span> No matter where you check the slope on a straight line, you will get the same answer.</span> </span></span><span><span><span> Non-Linear Functions:</span>When working with <span>non-linear functions, </span>the "average rate of change" is not constant.
The process of computing the "average rate of change", however, remains the same as was used with straight lines: two points are chosen, and is computed.<span>FYI: </span>You will learn in later courses that the "average rate of change" in non-linear functions is actually the slope of the secant line passing through the two chosen points. A secant line cuts a graph in two points.</span></span></span>
When you find the "average rate of change" you are finding the rate at which (how fast) the function's y-values (output) are changing as compared to the function's x-values (input).
When working with functions (of all types), the "average rate of change" is expressed using<span>function notation.</span>