titik potong grafik f(x)=3x²-10x-8 adalah..

f(x)=3x²-10x-8
y = 3x²-10x-8

Tipot di sb.y, maka x= 0
y = 3(0)² - 10(0) - 8
= -8

Tipit di sb.x, y = 0
0 = 3x² - 10x - 8
(3x + 2)(x-4)
x = -2/3 V x= 4

f(x) = y = 3x² - 10x - 8

• titik potong dg sb x ---> y = 0
3x² - 10x - 8 = 0
(3x + 2)(x - 4) = 0
x = -2/3 atau x = 4
tiktong dg sb x ---> (-2/3 , 0) dan (4,0) ✔

• titik potong dg sb y ---> x = 0
y = 3.0 - 10.0 - 8 = -8
Tiktong dg sb y ---> (0,-8) ✔