12 years, use the slope of the line of best fit to find the best estimate for the age of the child.
ex: (3,10), (6,20), (9,30), which means the y value of 40 must be 12.
Answer:

Step-by-step explanation:
If you divide
by 4 (both numerator and denominator)
You get
which is equivalent to the given ration
Answer:
(4,7)
Step-by-step explanation:
Answer:
THE CORRECT ANSWER IS 0.6
Step-by-step explanation:
6/10=0.6
Not necessarily.

and

may be linearly dependent, so that their span forms a subspace of

that does not contain every vector in

.
For example, we could have

and

. Any vector

of the form

, where

, is impossible to obtain as a linear combination of these

and

, since

unless

and

.