Answer:
1) y = (-13/6)x + (37/3)
2) -⅔
3) negative
Step-by-step explanation:
1) slope = (1.5-8)/(5-2) = -13/6
y = (-13/6)x + c
x = 2, y = 8
8 = (-13/6)(2) + c
c = 37/3
y = (-13/6)(6) + (37/3) = -⅔
2) y = (-13/6)x + (37/3)
3) since the slope is negative, the association between the variables is negative
Answer:
Step-by-step explanation:
Since 
and 
are complex conjugates, let's define them as follows:
Since 
is a real number, complex part of above result must be zero.
From to hold above equality, 
or 
.
However, since 
, 
So, 
or 
And since and are complex conjugates, taking plus or minus sign as found above will not affect the result, so let's write the last version of and as follows:
Since
⇒ 
Finally, 
⇒ 
Answer:
-30?
Step-by-step explanation:
