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5 2slope

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Transcript

  • 1. Warm - up
    • Use 6x-y=7
    • Solve for y using the x-values to the left.
    • Then graph the linear equation
    -3 -1 0 2 4 y x
  • 2. 3x-y=7
    • Use
    • Solve for y using the x-values to the left.
    • Then graph the linear equation
    -16 -3 -10 -1 -7 0 -1 2 5 4 y x
  • 3. Defining Slope
    • When building a roof, carpenters must figure out the pitch, or slope of the roof.
    • A 1:10 pitch means that for every inch raised, the roof extends 10 inches.
    3 in 30 inches
  • 4. What’s the slope of the hill?
    • If a hiker rises 200 feet in elevation every mile, what is the average slope of the mountain?
  • 5. Graphs have slopes. To tell the slope of a line, we need to know how high it rises or sinks and how far it moves left or right.
    • Use
    • Solve for y using the x-values to the left.
    • Then graph the linear equation
  • 6. Slope as an equation.
    • How high the slope rises or sinks is called the rise.
    • How far the slope moves left or right is called the run.
    • IMPORTANT!
  • 7.
    • 1) Find two points on the line.
    • 2) How high does it rise?
    • 3) How far right does it run?
    • 4) Put the numbers into a ratio, or fraction.
    Let’s find the slope of this line. 3 4