EM-1530

Substitution

E Math · Secondary 4 · Easy · Substitution

The variables

x

and

y

are connected by

y = \dfrac{x^2}{4} - \dfrac{3}{x}

. When

x = 2

, what is the value of

y

?

$-0.5$
$0.5$
$-2.5$
$2.5$

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