dont too much understand can somebody explain to me please

What is the best way to determine whether a given point is a solution to a system of equations?
a.
substitute the x and y coordinates into one equation and check to see if they work
c.
substitute the x and y coordinates into both equations and check to see if they work
b.
graph the equations and see if the point lies on both lines
d.
solve the system of equations and compare the answer to the given point

Question

dont too much understand can somebody explain to me please

What is the best way to determine whether a given point is a solution to a system of equations?
a.
substitute the x and y coordinates into one equation and check to see if they work
c.
substitute the x and y coordinates into both equations and check to see if they work
b.
graph the equations and see if the point lies on both lines
d.
solve the system of equations and compare the answer to the given point

imstuck · Answer

You can't just sub into one equation; what if it works in the first one but not in the second one?  You wouldn't know if you didn't try both.  And also a solution to a system of equations is not a point that lies on both lines...it is the point where the lines intersect one another.  You could solve the system to compare it to the answer, but if you have a possible answer, you don't need to solve them...they are already solved.  Just plug in the points they gave you into both equations.

anonymous · Answer

then the answer would be c right @IMStuck

imstuck · Answer

Yes, the answer is C.  Sorry!

imstuck · Answer

TY for the medal!