Grade 10 Math

Answers for Review Sheet

Q1 and 2.
 Answers are given already in class

Q3.
a) P (0,2)
b) No Answer
c) Dom f = R
d) Ran f = ] - infinity , 2]
* sorry, can't find symbol for the infinity 
e) P (-2, 0) and P (2, 0)
f) P (0,2)

Q4.
a) 1
b) 1

Q5.
a) the rate of change is 500/7 or 71.5
b) the rate of change is 2/11

Q6.
- Peroid: 4
Frequency= 1/4

- complete the graph: will explain in class tommorrow
- determine f(2) =2
f(5)=1
- zeros of interval [0, 12] : (0,0) (4,0) (8,0) and (12,0)
- when f is increasing: [0,2] U [6, 10]
- when f is decreasing : [2,6] U [10,12]
- when f is constant: N/A

- ran f [-4, 4]
- min f  P(6,-4) or -4
- max f P (2,4) and (10,4) or 4

Q7.
a) m= 200- 13x
b) x= (200-m) / 13

Q8.
a)
positive: ] - infinity, -2]
negative: [2. + infinity[

b)
positive: [-10, 10] U [ 30, +infitiy[
negative: [10,30]

Chapter Test on Wendesday