Practice Standard Form Of A Quadratic Function (2.1)

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6 sample questions

Question 1.
Find the y-intercept of f(x) = 2x² + 3x - 5.
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Set x = 0 in the function.
Question 2.
What happens if a = 0 in a quadratic function?
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Think about the degree of the polynomial.
3Question 3.
What is the standard form of a quadratic function?
- f(x) = bx + c
- f(x) = ax² + bx + c
- f(x) = x² - bx
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Look for the highest degree of x here!
4Question 4.
A parabola opens upwards when a is?
- True
- False
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Think of 'up' as positive and 'down' as negative.
Question 5.
A rectangular garden's area is defined by the quadratic function A(x) = x² + 4x + 3. What dimensions maximize the area?
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Look for the vertex to determine maximum area.
Question 6.
The height of a projectile modeled by h(t) = -16t² + 64t + 48. Calculate when the projectile hits the ground.
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Use the formula to find the roots when the height is zero.

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