Question 252704
Let's take them one at a time:
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2. 
(i) y = 3 - x
(ii)y = x + 1 
Creating a table of values, we get:
X . . . -2 . . -1 . . . 0 . . . 1 . . . 2
Y(i). . .5 . . . 4 . . . .3 . . . 2 . . . 1 
Y(ii) . .-1 . . 0 . . .  1. . . .2 . . . 3

Notice the Y's are equal at 2, when X = 1. You should be able to graph this now.
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3. 
(i) y = 1/2 x -3/2
(ii) y = 2x-6/4 
Creating a table of values, we get:
X .  . . . .. . . -4 . . . . . . .-2 .  . . . . . . . . 0 .  . . . . . . . 2  . . . .. . . . 4
Y(i). . . .  . -7/2 .  . . .. . -5/2  . . . . . . . -3/2  . . .. . .-1/2 .  . . . . 1/2 
Y(ii) . .  . .-19/2 . . . . . . -11/2 . .  . . .  -3/2 . . .. . . .5/2 . . . . . . 13/2

Notice the Y's are equal at -3/2, when X = 0. You should be able to graph this now.
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4.
(i)y = x+3/2
(ii)y = 2x-3/4
Creating a table of values, we get:
X .  . . . .. . . 0 . . . . . . .3/4 .  . . . . . . . . 6/4 .  . . . . . . . 9/4  . . . .. . . . 12/4
Y(i). . . .  . 3/2 .  . . .. . 9/4  . . . . . . . .  . 3  . . .  .  . .  . 15/4 .  . . .  . . . .9/2 
Y(ii) . .  . .-3/4 . . . . . . 3/4 . .  . . . .   9/4 . . . . . . . . .15/4 . . . . .  . . 21/4

Notice the Y's are equal at 15/4, when X = 9/4. You should be able to graph this now.