The answer is
<span>Points lie on the same line if and only if the points are collinear</span>
Answer:
The system has infinite solutions described in the set 
Step-by-step explanation:
The augmented matrix of the system is
.
We apply row operations:
1. We add the first row to the second row twice and obtain the matrix ![\left[\begin{array}{cccc}-1&-1&-1&4\\0&-1&-2&10\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bcccc%7D-1%26-1%26-1%264%5C%5C0%26-1%26-2%2610%5Cend%7Barray%7D%5Cright%5D)
2. multiply by -1 the rows of the previous matrix and obtain the matrix
that is the reduced echelon form of the matrix associated to the system.
Now we aply backward substitution:
1. Observe that the reduced echelon form has a free variable, then the system has infinite solutions.
2.

3.
.
Then the set of solutions is 
Answer:
C
Step-by-step explanation:
He would need to play 12 average scoring games.
900 (goal) - 300 (has) = 600
and 600/50 is 12
hope this helps :)