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7 th Grade Pre-Algebra Chapter 7-5 Graphing Linear Equations
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7th Grade Pre-Algebra
Chapter 7-5Graphing Linear Equations
Terms and Concepts (A) Once a linear equation is obtained, it
can be graphed by using two different methods:
Find the two intercepts and draw a line through those two points.
Re-write the equation in slope-intercept form. Plot the intercept and then plot two additional points using the value for slope.
Terms and Concepts (B) Method 1:
To find the x intercept, set y = 0 and solve for x.
To find the y intercept, set x = 0 and solve for y.
Plot the two points and draw a line through them.
Terms and Concepts (C) Method 2:
By using the rules of algebra (see chapter 4), rearrange the equation to get it into slope-intercept form: y = mx + b.
Graph the y intercept (0, b). Use the slope (m) to plot two other points
and then draw a line through all three points.
Class assignment
Work the examples on pages 310-313 Problems 1-8
Work on page 314 Problems 4-34 (even)
Homework assignment
Do page 45 (1-12, all) in the workbook.
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