Spreadsheets+and+Graphical+Calculators

Use a spreadsheet to verify that
 * Exploring General Algebraic Relationships **
 * Spreadsheets **

2a + 2b has the same value as 2(a + b)

In Excel input formulae in C1 (=2A1+2B1) and in D1 (=2(A1+B1) Input different values for A and B in A1 and B1

Verify that C1 and D1 will always show the same number


 * Graphical Calculator **

Using a graphical calculator:

**Work through calculator operations by following step-by-step instructions and illustrations, then practice your skills with similar exercises.**

These are the calculator operations you will encounter most frequently in your study of mathematics. The step-by-step instructions walk you through the operation guiding your way along each and every keystroke.

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 * Screen captures of the display show you what to expect on your own calculator screen.

Verify that (x + 4) – (x – 1) = 5

Input Y1 = x + 4 Y2 = x – 1 Y3 = (x + 4) – (x – 1)

Use the table to confirm that 4 – (-1) = 5 Draw the graph of the two straight lines for Y1 and Y2 Confirm that they are parallel lines with a vertical distance between them of 5