Question

Tenatang persamaan garis lurus,,yg paham tolong jaab yh

Answer 1

Y-y1 = (y2-y1)/(x2-x1) (x-x1)
y-1 = (4-1)/(2-1) (x-1)
y-1 = 3(x-1)
y = 3x -3+1
y = 3x - 2

gambar 2
y-y1 = (y2-y1)/(x2-x1) (x-x1)
y-1 = (0-1)/(3-1) (x-1)
y-1 = -1/2 (x-1)
y = -1/2x + 1/2 + 1 kalikan 2
2y = -x + 1 + 2
x + 2y = 3