Look on the app socratic.
Answer:
a) {(3,3),(3,4),(4,5),(4,6)}
Step-by-step explanation:
Given
(a) to (d)
Required
Which is not a function
A relation is represented as:

For the relation t be a relation, then:
where 
This means that none of the x values must be related.
The first relation has 3 repeated as its value of . Hence, (a) is a relation
Answer:
D) 252.00
Step-by-step explanation:
Initial price of computer = $400
Less 30 % = -0.30 × 400 = - 120
Sale price = 280
Less 10 % = -0.10 × 280 = -28
Final price = $252
x - 3y =2
2x+ y =11 | *3
x - 3y = 2
6x +3y=33
--------------
7x =35
x=35:7
x=5
x-3y=2
5-3y=2
3y=5-2
3y=3
y=1
Answer:
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