FINDING SLOPE By Ms. Morgan. Students will be able to: Find the slope of a line on a coordinate plane.

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Presentation transcript:

FINDING SLOPE By Ms. Morgan

Students will be able to: Find the slope of a line on a coordinate plane.

Math Standard: 8.G.13 Determine the slope of a line from a graph and explain the meaning of slope a constant rate of change.

Do now: Using the graphing paper, create a coordinate plane. Graph the following points: Value of X Value of Y Pairs (X,Y) -40(-4;0) -21(-2;1) 02(0;2) 44(4;4)

How do we find the answer: Value of X Value of Y Pairs (X,Y) -40(-4;0) -21(-2;1) 02(0;2) 44(4;4)

New Concept: SLOPE Slope is the ratio of the vertical change to the horizontal change.

Types of SLOPES: POSITIVE (going up)NEGATIVE (going down)

Types of SLOPES cont.? ZERO SLOPE NO SLOPE

How do we find SLOPE? We find SLOPE by measuring RISE OVER RUN

How do we find SLOPE cont.? RISE = 2 RUN = 3 SLOPE = 2/3 THIS IS A POSITIVE SLOPE

How do we find SLOPE cont.? RISE = 3 RUN = -2 SLOPE = -3/2 THIS IS A NEGATIVE SLOPE

On your own: USE LOOSE LEAF PAPER FOR THESE THREE PROBLEMS. THEY WILL BE COLLECTED AND GRADED. PLEASE BE NEAT! Create a table and graph the following equations: Y= 2x - 1 Y= 3x – 4 Write down if it is a Positive or Negative SLOPE. VALUE OF X EQUATIONVALUE OF Y (X;Y) PAIR

BIBLIOGRAPHY gebra/AC1/Llines.htm