Y = a (x + 3)² - 1
Let's take the point (-1;3)
3 = a ( -1 + 3)² - 1
3 = 4a - 1
4a = 4
Therefore a = 4/4 = 1
(x+3)² - 1
= x² + 6x + 9 - 1
= x² + 6x + 8
The answer would be y = x² + 6x + 8.
Hope this helps !
Photon
Answer:
Option d is right
Step-by-step explanation:
We know that a linear correlation is a measure of association between two variables dependent and independent variable. r always lies between -1 and 1 both inclusive. If r is nearer to 0 weak correlation and if |r| is near to 1 there is a stronger correlation.
Positive sign of r implies positive association and negative r implies negative association.
Hence out of the four options given about correlation we have
Option a is right because removal of outliers confirm accurate correlation
Option B is right because only if linear pattern is visible, correlation will be right
Option C is right because only for numerical data r can be calculated
Option d is wrong because correlation lies always between -1 and 1 both inclusive.
