Quadratic Equations
Hong Kong
Stage 4 - Stage 5
Maximum and Minimum Values of Quadratic Equations
Interactive practice questions
Consider the equation $y=2x^2$y=2x2.
a
Is every value of $y$y positive?
No
A
Yes
B
b
The graph of $y=2x^2$y=2x2 is given below.
Loading Graph...
State the axis of symmetry of the parabola.
c
What is the minimum value of $y$y?
$y$y$=$=$\editable{}$
Easy
< 1min
Consider a parabola of the form $y=ax^2+bx+c$y=ax2+bx+c, where $a>0$a>0
Easy
< 1min
Consider a parabola of the form $y=ax^2+bx+c$y=ax2+bx+c, where $a<0$a<0
Easy
< 1min
Consider the curve $y=2x^2-3$y=2x2−3.
Easy
1min
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