Quadratic Functions (Grade 10 NSC Matric Mathematics): Quizzes

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Quadratic Functions
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What is the general form of a quadratic function?

y=ax2+qy = ax^2 + q

What effect does parameter qq have on graph of y=ax2+qy = ax^2 + q?

Creates a vertical shift

When a<0a < 0 in y=ax2+qy = ax^2 + q, which way does parabola open?

Opens downward (forms a frown)

How does a larger value of ∣a∣|a| affect parabola?

Makes parabola narrower

What is range of y=ax2+qy = ax^2 + q when a>0a > 0?

[q;∞)[q; \infty)

What is the y-intercept of y=ax2+qy = ax^2 + q?

(0,q)(0, q)

Where is turning point of y=ax2+qy = ax^2 + q?

(0,q)(0, q)

For real x-intercepts to exist, what must be true about aa and qq?

They must have opposite signs

What is axis of symmetry for y=ax2+qy = ax^2 + q?

x=0x = 0

What is domain of all quadratic functions y=ax2+qy = ax^2 + q?

All real numbers

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