Tlg jawab soal mtk no 11-18​

11)
y = x² – 3 , x = 1
y= 1 – 3 = -2 (1, -2)

gradien = y' = 2x
m= 2
y – y1 = m (x – x1)
y + 2 = 2 ( x – 1)
y = 2x – 2 – 2
y = 2x – 4
2x -y – 4 = 0
2x – y = 4