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Thank you very much in advance for whom will help and for whom will answer my questions correctly.​​

It includes all the points between those endpoints.

Intersection of the planes results in line.

An axiom is a statement that is so evident or well-established, that it is accepted without controversy or question

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

option a is correct.

only one solution to the system of equations

step-by-step explanation:

if the graph of the equations do not intersects(i.,e if they are parallel) then, there are no solutions that are true for both the equations.

if the graph of the equations intersects, then there is one solution and that is true for both the equations.

since, in the given figure:

the two lines intersect each other

⇒there is only one solution which satisfy both the lines of an equations.

therefore, there is only one solution to the system of equation