Two lines and a point are guaranteed to be coplanar if the two lines share only a single point.
Hope this helped :)
I think that the correct answers are a,d,c
X = 36/5 , X = 7 1/5 , X = 7.2
X cannot be solved.
This is not a solvable equation
no matter what, it will not equal
so your answer is unsolvable
hope this helps
If one of the variables is isolated or can be isolated without any fractions left, then use substitution.
If both equations are in standard form, then you should do elimination.
Another method is graphing, although it can be inaccurate at times (and graphing is the hardest method to use if you're new), so i would recommend the two methods I listed above.