What advantages does the method of substitution have over graphing for solving systems of equations?
A.
Graphing cannot be used to solve dependent or inconsistent systems due to the nature of the lines involved. Substitution can solve these.
B.
When using the graphingâ€‹ method, if either coordinate in the solution is aâ€‹ fraction, guessing the values may be required. Substitution requires no guessing.
C.
It is easier to solve application problems with substitution than with graphing.***
D.
Since both methods are capable of solving aâ€‹ system, substitution has no advantages over graphing.

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1. I prefer B
C is often not true, while B usually is.

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2. For lesson 2 unit 3 solving systems using substitution:
1.A
2.D
3.B
4.C
5.D
You’re welcome

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