EM-2035

Quadratic functions

E Math · Secondary 4 · Hard · Quadratic functions

The curve

y = -\dfrac{1}{2}(2x^2 - 6x + k)

cuts the

x

-axis at

x = 1

and

x = 2

. Using this information, find the value of

k

.

$k = 4$
$k = 5$
$k = 10$
$k = 12$

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