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Using Visual Formula

Among many other things, you can use Visual Formula to explore negative slopes. You create a negative slope when you make the m (slope) value of the line’s slope-intercept equation negative. The equation then assumes the form y = –m(x) + b. Here are a few equations to try:

a. y = –4x + 3

b. y = –6x + 1

c. y = –5x + 2

To implement equation a, work in the upper composition area and use the following steps:

1. Click the Value menu item and then to position the Value field, click in the upper equation composition area. This is the field that corresponds to the coefficient m. Click in the field and then type –4.

2. Click the Multiply menu item. Click to the right of the Value field to position the multiplication sign.

3. Click the Value ...

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