Question

determine a equação reduzida da reta r que tem coeficiente angular m= -1/2 e passa pelo ponto a( 1, 2/3): fazendo a formula y=ax+b

Answer 1

$m=- \frac{1}{2} \\\\ A(1, \frac{2}{3} )$

(y-y°)=m(x-x°)

$(y- \frac{2}{3} )= \frac{1}{2} (x-1)\to\\\\ y- \frac{2}{3} = \frac{1}{2}x-\frac{1}{2}\to\\\\ mmc=6\\\\ 6y-4=3x-3\to \\\\ 6y=3x-3+4\to \\\\ 6y=3x+1$