Question 458020
problem 1

2x+y=-8                                

  x    y
----------
(3,   -14)
(5,   -18)
(8,-24)


2(3)+y=-8                                
6+y=-8
-6    -6
y=-14


2(5)+y=-8
10+y=-8
-10   -10
y=-18

2(8)+y=-8
16+y=-8
-16   -16
y=-24

 x    y
---------
(2,   3)
(4,   9)
(6,   15)

3(2)-y=3
6-y=3
y=3

3(4)-y=3
12-y=3
y=9

3(6)-y=3
18-y=3
y=15

problem 2

 x    y
--------
(2,    5)
(4,    7)
(6,    9)

real simple on this one

y=x+3

y=2+3

y=4+3

y=6+3



x        y
-----------
                                               (2,      -12/5)
                                               (4,      -22/5)
                                               (-2,      8/5)

x+y=-2/5

2+y=-2/5
10/5+y=-2/5
-10/5    -10/5
y=-12/5


4+y=-2/5
20/5+y=-2/5
-20/5    -20/5
y= -22/5

-2+y=-2/5
-10/5+y=-2/5
+10/5    +10/5
y= 8/5


hope this helps