Question

Tolong bantu caranya ka​

Answer 1

Verified answer

→ kurva dan garis singgung ←

y = y

x² - 2x - 3 = 2x - 3

x² - 4x = 0

x(x - 4) = 0

x = 0 → y = 2.0 - 3 = -3

x = 4 → y = 2.4 - 3 = 5

m = y' = 2x - 2

titik singgung (0,-3) → m = 2.0 - 2 = -2

Pers garis singgung _1 :

y = -2(x - 0) + (-3)

y = -2x - 3

m = 2x - 2

titik (4,5) → m = 2.4 - 2 = 6

Pergasing _2 :

y = 6(x - 4) + 5

y = 6x - 19

Titik potong pergasing → C(a,b)

y = y

-2x - 3 = 6x - 19

6x + 2x = 19 - 3

8x = 16

x = 2 → y = 6.2 - 19 = -7

C(a,b) = (2,-7)

Maka :

b/a = -7/2 = -3,5 ✔