Answer:
suuuppppp
Step-by-step explanation:
Answer:
4x -y + 8=0
Step-by-step explanation:
:)
Answer:
11
Step-by-step explanation:
20 percent *55 =
(20:100)*55 =
(20*55):100 =
1100:100 = 11
Answer: 
<u>Step-by-step explanation:</u>

Answer:
3) 
4) a) 
b) 
Step-by-step explanation:
<u>Exercise 3</u>



<u>Exercise 4</u>
a) If L2 is parallel to L1, it has the same slope (gradient) ⇒ 
If L2 passes through point (3, 1):



So L2 = L1
b) If L3 is perpendicular to L1, then the slope of L3 is the negative reciprocals of the slope of L1 ⇒ 
If L3 passes through point (-5, 2):


