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Learn how to evaluate functions with given values and solve for variables. Practice solving function equations and determining solutions. Includes examples and quizzes.
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Welcome To Algebra Concept weeksemester 2(week 4) Mrs.Fardous Mrs. Beydoun
Day 1Monday February 26, 2018 Objective: I can evaluate a function with a given value. S.L.O.T g=6x , solve for x U= x-k , solve for x
Evaluate Solve Plug in
Evaluate p+2q+ 3r given p = 2 q = 4, r = 6 =2+ 2(4) + 3(6) =2 + 8 + 18 =28
Example : Evaluate 3c + 5 if c = 5 and d = 1 4d Solution : 3c + 5 = 3 (5) + 5 4 d 4 (1) = 15 + 5 4 = 20 4 = 5
Function Notation 25 Which do you prefer to write? Evaluate f when x = 25? OR 5 The f is the name of the function machine and the value inside the parentheses is the input. The expression to the right of the equal sign shows what the machine does to the input.
Example If f(x) = 2x + 3, find f(5). When evaluating, do not write f(x)! You want x=5 since f(x) was changed to f(5) You wanted to find f(5). So the complete final answer includes f(5) not f(x)
Solving g(x)=2x-1 g(0) g(-1) g(2)
Evaluating Substitute and Evaluate The input (or x) is 3.
Day 2Tuesday February 27, 2018 Objectives: • I can evaluate functions • I can determine if a value is a solution for a given function S.L.O.T g=3c , solve for c s= x + k , solve for x
Day 3 Wednesday February 28, 2018 Objectives: • I can evaluate functions • I can determine if a value is a solution for a given function
Solutions and evaluating Bingo Let g(x)=-5x +2, Find g(-1) g(-1)=7
Solutions and evaluating Bingo Let g(x)=-5x +2, Find g(3) g(3)=-13
Solutions and evaluating Bingo Is (0,2) a solution for g(x)=-5x +2, YES
Solutions and evaluating Bingo Let f(x)=4x-2, Find f(1) f(1)=2
Solutions and evaluating Bingo Is (-2,4) a solution for f(x)=4x-2 NO
Solutions and evaluating Bingo Is (0,-2) a solution for f(x)=4x-2 YES
Solutions and evaluating Bingo Is (3,10) a solution for f(x)=4x-2 YES
Day 4 Thursday March 1, 2018 Objectives: • I can evaluate functions • I can determine if a value is a solution for a given function S.L.O.T D=rt , solve for t L+w+h=2, solve for L
QUIZZIZ • IXL 3 • REVIEW