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This question was on my last test and i got completely stumped. Can someone please show me how to do it?
Determine the Co-ordinates of the point on the graph of where the slope of the tangent is -2. Find the equation of the tangent and show that this tangent touches the curve . what are to co-ordinates of this point of contact?
This is exactly the same as the last question you just asked
1. Find the derivative of the equation (tangent gradient) ie 2x + 8
2. using this it is possible to find location ie x= 3. Plug this back into original equation to find y
3. Use x,y,m to create y=mx+c equation for tangent
4. To find intercept points of two lines, simply sub one into the other
Calypso