# MathsWatch

#1
Given that k is a positive constant sketch the graph of
y=(x+k)(x-2k)
0
1 week ago
#2
Given that k is a positive constant sketch the graph of
y=(x+k)(x-2k)
You should be able to find the roots and the y-intercept.

The minimum or maximum points can be found by:
(1) first find the midpoint between the 2 roots
(2) use the value of x in the midpoint and substitute it back to the equation to find the y value.

When you expand the brackets, you should be able to see if the quadratic curve is a min or max curve.
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