Question

Escreva as funçoes na forma y=ax+b e determine os valores dos coeficientes a e b de cada uma delas .

b) 2y-3x=y+x+1

c) 3y+1=y-x

d) 3y+x=3x+2y+7

e) 4y-3x+2=-y-4x+7

f) -2y-x+3=-4y-6x-1

Answer 1

b) 2y-3x=y+x+1
2y-y=3x+x+1
y=4x+1
a = 4; b=1

c) 3y+1=y-x
3y-y=-x-1
2y=-x-1
y=-x/2 -1/2
a = -1/2; b = -1/2

d) 3y+x=3x+2y+7
3y-2y=3x-x+7
y=2x+7
a = 2; b = 7

e) 4y-3x+2=-y-4x+7
4y+y=3x-4x+7-2
5y=-x+5
y=-x/5 +5/5
y=-x/5 +1
a = -1/5; b = 1

f) -2y-x+3=-4y-6x-1
-2y+4y=+x-3-1-6x
2y=-5x-4
y=-5x/2 -4/2
y=-5x/2 -2
a = -5/2; b = -2


Renato.