You have given just one of the equations, and I guess you are looking for a formula for solving all linear equations.
I"d suggest looking at Cramer's rule for such a formula.
http://www.1728.org/cramer.htm
Answer:
A.
Step-by-step explanation:
It's literally the same equation written in reverse, which according to the commutative property, can be done.
4x + y = 5
3x + y = 8
y = -3x + 8
4x +(-3x + 8) = 5
4x -3x + 8 = 5
x + 8 = 5
x = -3
y = -3(-3) + 8
y = -9 + 8
y = -1
Answer:

Step-by-step explanation:
Assuming this is a linear equation in the form of
, we can first solve for the slope using
, for these points, the slope would be
. Now we plug in the points to get the equation:
plugging in (7,5), we get
×
+ 
and solving for b, we get b = 
therefore, the equation of the line passing through (7,5) and (1,2) is
.
hope this helps!
Answer: the answer is A) AC~=FC
Step-by-step explanation:
to answer that both triangles are congruent using SSS (Side-side-side) postulate, you have to show that each corresponding side is the same.