4. Functions and Relations
Middle Years
4.09 Discriminant and parabolas (Extended)
Interactive practice questions
Consider a parabola of the form $y=ax^2+bx+c$y=ax2+bx+c, where $a>0$a>0
a
Which of the following statements is true?
The vertex of the parabola is a maximum point.
A
The vertex of the parabola is a minimum point.
B
b
Each parabola below has an equation of the form $y=ax^2+bx+c$y=ax2+bx+c.
Select all the graphs for which $a>0$a>0
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A
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B
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C
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D
Easy
< 1min
Below is the result after using the quadratic formula to solve an equation.
$x=\frac{10\pm\sqrt{-1}}{8}$x=10±√−18
Easy
< 1min
How many real solutions are there to the equation $x^2=9$x2=9?
Easy
< 1min
How many real solutions are there to the equation $\left(x-7\right)^2=0$(x−7)2=0?
Easy
< 1min
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