garis yg bergradien 1/2 melalui titik 0,-1 tntukan persamaan garisnya mksh ^^

y -y₁ = m(x -x₁)
y -(-1) =1/2(x -0)
y +1 = 1/2 x
     y = 1/2 x -1
Maaf klo slh.

y-y1 = m (x-x1)
y- (-1) = 1/2 (x-0)
y + 1 = 1/2 x - 0
y= 1/2 x - 0 - 1
y = 1/2 x - 1