5.1 Slope P256-262.

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Presentation transcript:

5.1 Slope P256-262

Slope Formula Slope Definition Formula Ratio of change in y-coordinates to the change in x-coordinates Algebraically, for two points

Using Slope Formula Find Slope Of Line Given 2 Points Find slope of line that passes through Substitute Simplify

Using Slope Formula Find Slope Of Line Given 2 Points Find slope of line that passes through Substitute Simplify

Using Slope Formula Find Slope Of Line Given 2 Points Find slope of line that passes through Substitute Simplify

Using Slope Formula Find the value of r so the line through Find (r, 6) and (10, -3) has slope Find Coordinates Given Slope Substitute Simplify Now solve for r.

Using Slope Formula Find cross products. Find Coordinates Given Slope Simplify Add 30 Divide by 3

Using Slope Formula Find the value of r so the line through Find (6, 3) and (4, r) has slope Find Coordinates Given Slope Substitute Simplify Now solve for r.

Using Slope Formula Find cross products. Find Coordinates Given Slope Simplify Add 6 Divide by 2

Rate of Change Rate of Change Definition Slope Formula Ratio of change in quantity to the change in time Algebraically, this is the slope.

Using Slope Formula Find Rate of Change In 1990, the amount spent in U.S. restaurants was $239 billion. In 2000, the amount spent was $376 billion. Find the rate of change from 1990 to 2000. Find points Find slope

Assignment Name P259: 8-12even, 18-26even, 38-44 even Make answer key on right side of paper. Show work on body of paper Selected problems will be graded for accuracy Name Ch5 #1 P259: 8-12e, 18-26e, 38-44e 8) Work 10) Work 12) Work 18) Work 20) Work 22) Work Etc. 8) Ans 10) Ans 12) Ans 18) Ans 20) Ans 22) Ans Etc.