<span>(f−g)</span><span>(x)</span>=<span>f<span>(x)</span></span>−<span>g<span>(x<span>)
plug every thing in </span></span></span>5<span>x2</span>−3−<span>(<span>x2</span>−4x−8<span>)
then solve </span></span>5<span>x2</span>−3−<span>x2</span>+4x+<span>8
</span>=4<span>x2</span>+4x+<span>5</span>
Answer:
a. correlation
b. inverse linear correlation exists If the higher the population of students lead to a decrease in test score,
c. yes
Step-by-step explanation:
a. Correlation is a measure of the amount of association existing between two variables.
b. For linear correlation, if points are plotted on a graph and all the points lie on a straight line, then perfect linear correlation is said to exist. When a straight line having a positive gradient can reasonably be drawn through points on a graph positive or direct linear correlation exists,
Similarly,when a straight line having a negative gradient can reasonably be drawn through points on a graph, negative or inverse linear correlation exists,
The results of this determination give values of r lying between +1 and −1, where +1 indicates perfect direct Positive linear correlation and −1 indicates perfect inverse correlation or Negative linear correlation and 0 indicates that no correlation exists.
If the higher the population of students lead to a decrease in test score, there will definitely be a negative correlation between class size and test score. i.e low class size result in high test score which consequently lead to high performance.
c. YES
A negative correlation means low class size result in high test score which consequently lead to better performance.
Well, you would use factorization for this, which would be MORE than 54 different codes! :D
just like the previous one, we sum the sides to get the perimeter.
