2069
2069. y =2x 2 -6x+2 equation 1 Y’ = 4x – 6 equation 2 For secant , k = 4 Parallel lines have the same gradient so k= 4 for y=2x 2 -6x+2. y=2x 2 -6x+2 Y’ = 4x – 6 So 4 = 4x-6 x=2,5 From equation 1, y=2.(2,5) 2 -6.2,5 + 2 Y= -0,5; x=2,5;k=4
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