Question

1. Obtenha as equações das retas que passam por:

a. (2,3) e (1, -4)
b. (2,2) e (-3, 1/2)
c. (4, -1) e (1, 3)
d. (2,0) e (-1, -3)

Faça os cálculos de a e b e responda com a f(x).

Answer 1

Resposta:

$a)\left[\begin{array}{ccccc}x&y&1&x&y&2&3&1&2&3&1&-4&1&1&-4\end{array}\right] =0\\\\3x+4x+y-2y-8-3=0\\\boxed {7x-y-11=0}\\\\\\b)\left[\begin{array}{ccccc}x&y&1&x&y&2&2&1&2&2&-3&1/2&1&-3&1/2\end{array}\right] =0\\\\2x-\frac{x}{2}-3y-2y+1+6=0\\4x-x-10y+14=0\\\boxed {3x-10y+14=0}\\\\\\c)\left[\begin{array}{ccccc}x&y&1&x&y&4&-1&1&4&-1&1&3&1&1&3\end{array}\right] =0\\\\-x-3x+y-4y+12+1=0\\(-4x-3y+13=0)*(-1)\\\boxed {4x+3y-13=0}$

$d)\left[\begin{array}{ccccc}x&y&1&x&y&2&0&1&2&0&-1&-3&1&-1&-3\end{array}\right] =0\\\\\\-y-2y+3x-6=0\\\boxed {3x-3y-6=0}$

Explicação passo-a-passo:

Função

a) f(y) = 7x - 11

b) f(y) = 3x/10 + 7/5

c) f(y) = (-4x + 13 )/3

d) f(y) = x - 2