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Q: When is the substitution method a better method than graphing for solving a system of linear equation?

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For the most part it can. if you have a TI-83 or better, you can use the solver under your math button. All you have to do is plug in the equation that is set to equal zero!

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Elimination and substitution are two methods.

This looks like a question from a Virtual School course - please ask you teacher for help and use the examples in the lesson.

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For the most part it can. if you have a TI-83 or better, you can use the solver under your math button. All you have to do is plug in the equation that is set to equal zero!

A pro for solving equations through graphing can allow one to visualize problems which can allow one to make better sense to the problem. However, fractions, and decimals can be very difficult to plot accurately. Furthermore, solutions could fall outside of the boundaries of a graph making them impossible to see with a graph. A pro for solving equations through either the methods of substitution and elimination allow one to achieve an exact answer regardless of fraction, decimal, or integer. However, by using these methods one will have a more difficult time with visualization without the use of a graph.

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Together

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Elimination and substitution are two methods.

This looks like a question from a Virtual School course - please ask you teacher for help and use the examples in the lesson.

chocolate is better then vanilla

You can do anything you like in cooking. However, this particular substitution is not ideal. Whipping cream is a heavy cream, not a light cream. A mixture of whipping cream and milk would be a better substitution.

One reason would be that you can see trends in the data.

Playing an instrument has been attributed to better problem solving skills. This is very helpful in the solving of complex math equations. For this reason and many more Learning an instrument is beneficial to young minds.

I would draw up a simple table -5 -4 -3 -2 -1 0 +1 +2 +3 +5 +6 Then substitute these values into the equation and that will give you pairs of coordinates which you can plot. Of course, the numbers you choose for the top row of your table (the x values) will depend on the actual equation. This set of numbers I have showed above may not fit. If you care to give an actual example, I can give you a better answer.