describe how do you know if two lines are parallel if all you knew were the equations of the two lines
2 answers:
Answer:
Step-by-step explanation:
Put what you are given in the form of
y = mx + b
If both equations have the same m, the lines are parallel. For example
y = 4x + 10
y = 4x + 20
These two lines are parallel.
However
y = 8x + 40
y = 4x + 10 are not parallel even though it looks like m could be made the same by taking out 4 in each. Check them out on the graph below.
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Answer:
The answer is the option D
and
Step-by-step explanation:
we have
we know that
The solution of the system of equations is the intersection point both graphs
Using a graphing tool
see the attached figure
The solution are the points and
therefore
The solution of the equation are
so
For
For
therefore
and
because the intersection points are common points for both graphs
