LINEAR FUNCTIONS Solving Linear Equations (Page 7 of 7)

Now enter a guess for x. We will use -2. Do not press ENTER! Leave the cursor on this line and press ALPHA SOLVE. (If the solution -1.75 was already on this line to begin with, it is because of the result of the previous example we just completed. Whatever value is currently stored in each variable will be displayed initially. Usually, this value will NOT be the solution.)

 Negation key. 2 ALPHA SOLVE key. Calculator screen image.

The value that appears next to the variable x after doing this is the solution to the equation. Therefore, the solution set is {-1.75}.
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