Answer:

Step-by-step explanation:
Given
Points:


Required
Determine the equation of line that is perpendicular to the given points and that pass through 
First, we need to determine the slope, m of FG

Where
--- 
--- 



The question says the line is perpendicular to FG.
Next, we determine the slope (m2) of the perpendicular line using:


The equation of the line is then calculated as:

Where





Multiply through by 2

Add x to both sides


Hence, the line of the equation is 
Answer:
Step-by-step explanation:
The number of solutions that <span>exist for the system of equations is equal to the number of independent linear equations that consist the matrix. For example, in order to find the values of two independent variables, then we have to provide two independent equations according to law of degree of freedom.</span>
The answer is A. Hope it helps