What are two symbolic techniques used to solve linear equations? Which do you feel is better? Explain why. (Symbolic refers to algebraic techniques, rather than graphing.)

Substitution and elimination.
Both are better in certain scenarios, for example, if it is easy to set up an equation for substitution where 1 variable is on 1 side, then use that; For example, 4y=16+4x, you can easily divide by 4, [ get y=4+x (or y=x+4), and plug that into the other equation.
In other cases where it may not be so easy (Fractions/decimals, etc.), then you would probably rather

use elimination. ]

Expert answered|danielovd|Points 63|

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Asked 9/20/2012 4:42:19 PM

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