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REVIEW LAST WEEKReview

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Determine whether each equation is a linear equation. If so, write the equation in standard form.

1. xy = 62. y = 2 – 3x3. 5x = y – 44. y = 2x + 55. y = -7 + 6x6. y = 3x2 + 1

NO3x + y = 25x – y = -42x – y = -56x – y = 7NO

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Determine whether each equation is a linear equation. If so, write the equation in standard form.

7. y – 4 = 08. 5x + 6y = 3x + 29. ½ y = 1

y = 42x + 6y = 2y = 2

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Graph each equation.

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COORDINATE PLANE

Graph the point(-4, 3)

What quadrantis point A in?

AQUAD IV

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RELATIONS

What is the inverse of the following relation?

{(1, 2), (2, 5), (4, 8)}

{(2,1), (5,2), (8,4)}

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RELATIONS

Is (4, 39) in the solution set for y = 7x + 6?

39 = 7(4) + 639 = 34

NO

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FUNCTIONSReview

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FUNCTION

A relation in which each element of the domain is paired with exactly one element of the range.

THE DOMAIN CANNOTREPEAT

NO X DUPLICATES

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EXAMPLES OF A FUNCTION

X Y1 22 23 54 6

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EXAMPLES OF NOT A FUNCTIONX Y-1 22 22 54 6

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EXAMPLES OF NOT A FUNCTIONVertical line test for graphs- if the vertical line touches the graph once it’s a function, more than once and it’s not a function.

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FUNCTIONAL VALUES

Write y = -5x + 7 in functional notation.

- replace y with f(independent variable)

f(x) = -5x + 7Read “f of x”

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FUNCTIONAL VALUES

Find f(5) for the rule f(x) = 2x +1

- substitute 5 in for x and solve2(5) + 1

10 + 111

f(5) = 11

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ASSIGNMENTSTextbook page 292 #35, 36, 37,

39

USA Test Prep – Functions Practice

Music? - If you had a C or above on your Progress Report.

Quiz tomorrow on Domain, Range and Functions. Progress

Reports due tomorrow. Detentions will be written.