Tentukan gradien melalui titik berikut. A. Titik A (5,3) dan titik B (6,4) B. Titik B (-4,-5) dan titik C. (7,-8)

A. x¹ = 5, y¹= 3
x²= 6, y²= 4
y-y¹ x-x¹
------- = -------
y²-y¹ x²-x¹
y-3 x-5
------- = -------
4-3 6-5
y-3 x-5
------ = --------
1 1
1(y-3) = 1(x-5)
y-3 = x-5
y-x = -5+3
y-x = -2


B. x¹= -4 y¹= -5
x²= 7 y²= -8
y-y¹ x-x¹
----- = ------
y²-y¹ x²-x¹
y+5 x+4
------ = -------
-8+5 7+4
y+5 x+4
------ = --------
-3 11
11 (y+5) = -3 (x+4)
11y + 55 = -3x - 12
11y + 3x = -12 - 55
11y + 3x = -67