Answer: The correct option is
(A) (-1, 5).
Step-by-step explanation: Given that the point Q(-1, 5) is reflected across the line x = -1.
We are to find the co-ordinates of the image of Q.
For the point Q(-1, 5), we have
x co-ordinate = -1 and y co-ordinate = 5.
So, the point (-1, 5) lies on the line x = -1. The point Q(-1, 5) and the line x = -1 is shown in the attached figure below.
Therefore, the reflection of the point Q(-1, 5) across the line x = - 1 will be itself. Thus, the co-ordinates of the image of Q(-1, 5) after reflection is Q(-1, 5).
Option (A) is CORRECT.
Answer:
I will show the way.
Step-by-step explanation:
r is the correlation coefficient
To find SSxy
SSxy= ∑- ∑
To find SSxx
SSxy= ∑-
∑x
/n
To find SSyy
SSxy= ∑-
∑y
/n
if your r is near +1, it shows strong positive correlation. Y is proportional to X.
And if it nears -1, it would show strong negative correlation. Y is inversely proportional to X.
