## Presentation on theme: “Linear Equation: an equation whose graph forms a line. is linear. is not. In linear equations, all variables are taken to the first power. Linear means.”— Presentation transcript:

You are watching: An equation whose graph is a line

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2 Linear Equation: an equation whose graph forms a line. is linear. is not. In linear equations, all variables are taken to the first power. Linear means of a line. So a linear equation is the equation of a line. Why?

3 Suppose you were asked to graph the solution set of the linear equation, You could start by creating a table of values.

4 Choose any number to use as x or y…

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and substitute the number for the variable. Then calculate to find,

6 Continue, until you have 3 sets of x and y values.

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8 With your table completed for three sets of values, you are ready to graph the line.

9 When x is 0, y is 3, so plot the point, (0, 3).

10 And when x is 3, y is 0, so plot the point, (3, 0).

11 And finally, when x is -3, y is 6, so plot the point, (-3, 6).

12 If the three points do not line up, you need to find your mistake. If they do line up, you just need to connect the dots.

13 This is the graph of the linear equation,

14 Create a table of values for each equation, and graph it on grid paper: 1. 2. 3. 4.