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Equations and Functions

Equations and Functions. How do I know if an Equation is a function?. Is 4x + 2y = 6 a function? To find out: Solve for y Ask yourself if you put one value in for x how many values will it produce for y y = 3 – 2x. How do I know if an Equation is a function?.

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Equations and Functions

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  1. Equations and Functions

  2. How do I know if an Equation is a function? • Is 4x + 2y = 6 a function? • To find out: • Solve for y • Ask yourself if you put one value in for x how many values will it produce for y • y = 3 – 2x

  3. How do I know if an Equation is a function? • Is 15x2 + 5y = 50 a function? • y = 10 – 3x2

  4. How do I know if an Equation is a function? • Is 8x + 4y2 = 20 a function?

  5. Find the Domain and Range from an Equation? • For the domain ask yourself if there is any value for x that you could plug in that would produce an undefined answer • If so, exclude these values • y = 2x - 4

  6. Find the Domain and Range from an Equation? • For the range ask yourself what type of answer valid values of x would produce. • y = 2x - 4

  7. Find the Domain and Range from an Equation? • For the domain ask yourself if there is any value for x that you could plug in that would produce an undefined answer • If so, exclude these values • y = 7x2 + 3

  8. Find the Domain and Range from an Equation? • For the range ask yourself what type of answer valid values of x would produce. • y = 7x2+ 3 • y= 2x2 -5

  9. Find the Domain and Range from an Equation? • For the domain ask yourself if there is any value for x that you could plug in that would produce an undefined answer • If so, exclude these values

  10. Find the Domain and Range from an Equation? • For the range ask yourself what type of answer valid values of x would produce.

  11. Find the Domain and Range from an Equation? • For the domain ask yourself if there is any value for x that you could plug in that would produce an undefined answer • If so, exclude these values

  12. Find the Domain and Range from an Equation? • For the range ask yourself what type of answer valid values of x would produce.

  13. Find the Domain and Range from an Equation? • For the domain ask yourself if there is any value for x that you could plug in that would produce an undefined answer • If so, exclude these values

  14. Find the Domain and Range from an Equation? • For the range ask yourself what type of answer valid values of x would produce.

  15. Find the Domain and Range from an Equation? • For the domain ask yourself if there is any value for x that you could plug in that would produce an undefined answer • If so, exclude these values

  16. Find the Domain and Range from an Equation? • For the domain ask yourself if there is any value for x that you could plug in that would produce an undefined answer • If so, exclude these values

  17. Find the Domain and Range from an Equation? • For the domain ask yourself if there is any value for x that you could plug in that would produce an undefined answer • If so, exclude these values

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