Yes
Yes.
The equation of the line will also depend on its slope which has not been given and so an answer is not possible.
-10
6.530 and 6.5299... recurring are two possible answers.
Decimal points aren't positive or negative. Decimals can be either.
Yes.
Steepest line possible dealing with slope is up to, but not including infinity.
Yes, the slope can be a fraction; and can be less than one or negative.
Try to do as little as possible of a slope, so you won't feel it but so it has a slope
No, if the minerals are deep, slope mining is not possible.
The equation of the line will also depend on its slope which has not been given and so an answer is not possible.
It really not possible. Other wise it will be in decimals.
1.48000, and 1.47999... are two possible answers.
-10
The slopes will be the same. It is also possible that both parallel lines have no slope defined - if they are vertical.
The given points of (-810) and (-8-7) are not possible to work out the slope for a straight line equation.
3.70000 and 3.6999... (recurring) are two possible answers.