Question

Tolng di. bantu y no ,9,12 ,13,14

Answer 1

9) y = 2 - x
y = 0 --> 0 = 2 - x --> x = 2
x = 0 --> y = 2
gambar (D)

12)melalui ttk (0,2) , (4,0)
(y-y1)/(y2-y1)=(x-x1)/(x2-x1)
(y-2)/(0-2) = (x-0)/(4-0)
(y-2) / -2 = (x - 0) / 4
4(y-2) = -2(x-0)
4y - 8 = -2x
4y = -2x + 8
y = -2/4 x + 8/4
y = -½x + 2 (D)

13) mel ttk (-5,0) dan (0,3)
(y-y1)/(y2-y1) = (x-x1)/(x2-x1)
(y-0)/(3-0) = (x+5)/(0+5)
(y-0)/3 = (x+5)/5
5(y-0) = 3(x+5)
5y - 0 = 3x + 15
-3x + 5y = 15
3x - 5y = -15 (C)

14) mel ttk (-3,0) dan (0,-4)
(y-y1)/(y2-y1) = (x-x1)/(x2-x1)
(y-0)/(-4-0) = (x+3)/(0+3)
(y-0) / -4 = (x+3) / 3
3(y - 0) = -4(x + 3)
3y - 0 = -4x - 12
4x + 3y = -12 (A)