Find the equation of the normal to the curve y = 4x² - 7x + 2 at the point (2, 4). Is this right? dy / dx = 8x - 7 x-co-ordinate = 2 16 - 7 = 9 [tangent] normal] = -1/9. y-4 / x-2 = -1/9 9y - 36 = -x + 2 9y + x + 38 = 0
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Dear db5vry, The start is perfect, the sprint is excellent, but in the last step you slid on a banane heel.
Is it -34, or -38, rather than +38?
9y - 36 = -x + 2 --> 9y+x = 38 --> 9y + x - 38 = 0
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