Question

Com cálculo 1. Determine o valor do coeficiente angular e do coeficiente linear de cada uma das retas abaixo: a) y = 2 – 3x b) y = 2.(3x – 4) c) y = (2x + 1) / 2 d) 3x + 4y = 1

Answer 1

Explicação passo-a-passo:

a)

$\sf y=2-3x$

• $\sf a=-3~\rightarrow~coeficiente~angular$

• $\sf b=2~\rightarrow~coeficiente~linear$

b)

$\sf y=2\cdot(3x-4)$

$\sf y=6x-8$

• $\sf a=6~\rightarrow~coeficiente~angular$

• $\sf b=-8~\rightarrow~coeficiente~linear$

c)

$\sf y=\dfrac{2x+1}{2}$

$\sf y=x+\dfrac{1}{2}$

• $\sf a=1~\rightarrow~coeficiente~angular$

• $\sf b=\dfrac{1}{2}~\rightarrow~coeficiente~linear$

d)

$\sf 3x+4y=1$

$\sf 4y=-3x+1$

$\sf y=\dfrac{-3x}{4}+\dfrac{1}{4}$

• $\sf a=\dfrac{-3}{4}~\rightarrow~coeficiente~angular$

• $\sf b=\dfrac{1}{4}~\rightarrow~coeficiente~linear$

Answer 2

Oie, Td Bom?!

■ Função do tipo 1° grau do tipo y = ax + b, onde a (coeficiente angular) e b (coeficiente linear).

a)

y = 2 - 3x = - 3x + 2

• Coef. Angular: - 3.

• Coef. Linear: 2.

b)

y = 2(3x - 4) = 6x - 8

• Coef. Angular: 6.

• Coef. Linear: - 8.

c)

y = [2x + 1]/2 = x + 1/2

• Coef. Angular: 1.

• Coef. Linear: 1/2.

d)

3x + 4y = 1 ⇒ 4y = - 3x + 1 ⇒ y = - 3/4 x + 1/4

• Coef. Angular: - 3/4.

• Coef. Linear: 1/4.

Att. Makaveli1996