Question

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Answer 1

a) 2x + y = 6

y= 6 -2x

y= -2x +6

b) x + 3y = 12

3y =12 - x

y= 4 - 1/3x

y= -1/3x +4

c) 3x + 4y =12

4y = 12 -3x

y= -3 -3/4x

y= -3/4x +3

d)5x-3y = 15

-3y =15 -5x

3y = -15 +5x

y= -5+ 5/3x

y= 5/3x -5

e) 1/2y -3 =0

y-6=0

y=6

f) 3y +9 =0

3y=-9

y=-3

g) 1/3x -1 =0

x-3=0

x=3

h) 5x-3y =15

-3y =15 -5x

3y = -15 +5x

y= -5 + 5/3x

y= 5/3 x -5

i) 2x+6 =0

2x=-6

x=-3