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Question of the day

Question of the day. What is a good way to give someone directions? How would tell someone exactly where something is?. Coordinate plane order pairs. Coordinate plane. Consists of two axis X-axis goes horizontal (left to right) Y-axis goes vertical (up and down)

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Question of the day

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  1. Question of the day What is a good way to give someone directions? How would tell someone exactly where something is?

  2. Coordinate planeorder pairs

  3. Coordinate plane • Consists of two axis • X-axis goes horizontal (left to right) • Y-axis goes vertical (up and down) • Origin is the intersection of the two axis

  4. quadrants • The coordinate plane is divided into four quadrants

  5. Order pair • Is a pair numbers that allow you to locate a point on a coordinate plane • Two numbers that form the ordered pair called coordinate

  6. How to use the order pair • (4,6) • The 4 is the X coordinate. It tells you how many units right or left from 0. • The 6 is the Y coordinate. It tell you how many units up or down from 0.

  7. origin • The origin is the middle • It is (0,0)

  8. You try • Find the coordinate and quadrant of point P and point Q.

  9. directions • Put away notes • Get out graph paper, if you have any

  10. summary • In what quadrant would the point (-4,-5) be? • Why are the both negative

  11. Question of the day • Plug in the value of a variable into an equation and get an answer. If you were to increase the value of that variable, would the answer always increase?

  12. Function • Input • Output

  13. function • A rule to produce exactly one output for every one input value. • Huh? It is similar to an equation that equals Y, that includes X

  14. example • Y=2X+9 • Y=X • Y=X - 5

  15. Input value • The value substituted into the function. • Y=4X+6 • If X=3 then 3 is the input value • It is also called the domain

  16. Output value • The value that results from the substitution • Y=6X • If X=3 then • Y=6(3), so Y = 18 • 18 is the output value

  17. Function table • We use function table to find input and output value

  18. summary • You are given a function. Then you are given either the input or output value. Could you find the input or output not given to you? • How?

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