Download presentation

Presentation is loading. Please wait.

1
**3 hr 5 hr 8 hr Hours worked Charge**

A plumber charged $110 for a three hour job and $160 for a five hour job. At this rate, how much would he charge for an eight hour job. plumbers normally charge a basic fee to just show up, and then they charge per hr. Hours worked Charge 3 hr $110 5 hr $160 8 hr $?

2
240 $235 220 200 180 160 140 120 100 80 Distance 60 40 20 1 2 3 4 5 6 7 8 9 10 11 12 Time

3
**Lesson 3.8 Linear Functions f(2) = 5 ( 2, 5) Function notation**

A linear function is a linear equation written with f(x) instead of y Function notation Equation notation Input, output Ordered Pair f(2) = 5 ( 2, 5)

4
**f(x) = x + 4 Example: Find an equation of the linear function f**

a) m = , b = 4 f(x) = mx + b f(x) = x + 4

5
f(-2) = 1 , m = 3 b) step1: Rewrite the function notation as ordered pair x1 y1 f(-2) = 1 (-2, 1) step2: write the equation using the point slope form y – y1 = m(x – x1) y – 1 = 3(x + 2) y – 1 = 3x + 6 y = 3x + 7 step3: write the equation in the function notation. f(x) = 3x + 7

6
f(0) = 7 , f(4) = -1 c) step1: rewrite the function notation as ordered pair f(0) = 7 f(4) = -1 (0, 7) (4, -1) x1 y1 x2 y2 step2: find the slope (0, 7) and (4, -1) step3: write the equation using the point slope form y – y1 = m(x – x1) y – 7 = -2(x – 0) y – 7 = -2x y = -2x + 7 step4: write the equation in the function notation. f(x) = -2x + 7

7
**f is a linear function f(x) = -x + 4 d) **

If f(1) = 3 , f(-1) = 5, find f(10)=? and f(100)=? step1: rewrite the function notation as ordered pair f(1) = 3 (1, 3) f(-1) = 5 (-1, 5) x1 y1 x2 y2 step2: find the slope (1, 3) and (-1, 5) step3: write the equation using the point slope form step5: find f(10) and f(100) y – y1 = m(x – x1) f(10) = - (10) + 4 y – 3 = -1(x – 1) = -6 y – 3 = -x + 1 y = -x + 4 f(100) = -(100) + 4 step4: write the equation in the function notation. = -96 f(x) = -x + 4

8
Home Work (2 – 22 + even 28, 29, 30) Page 149, 150

Similar presentations

Presentation is loading. Please wait....

OK

1 More Standard Costing & Variance Analysis Week 10.

1 More Standard Costing & Variance Analysis Week 10.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on ram and rom in computer Mp ppt online viewer Ppt on online railway reservation system project Ppt on power generation in india Ppt on sexual reproduction in plants for class 7 Differential display ppt on ipad Ppt on oxygen cycle for class 9 Ppt on cost accounting concepts Ppt on as 14 amalgamation define Ppt on high voltage engineering corp