Curve and line

The equation of a curve C is y=2x² -8x+9 and the equation of a line L is x+ y=3

(1) Find the x co-ordinates of the points of intersection of L and C.
(2) Show that one of these points is also the stationary point of C?

Correct result:

a1 =  2
a2 =  1.5
b =  2

Solution:


Checkout calculation with our calculator of quadratic equations.

a2=x2=1.5=32
4b−8=0 4b=8 b=8/4=2 =2

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