Quadratic Functions and Equations in One Variable

3x² - 4 is a quadratic expression

• true

• false

The graph of a quadratic function is called

• a line
• a hyperbola
• a parabola
• a cubic

Tags

CCSS.HSF-IF.C.7A

Determine the values of a, b, and c for the quadratic equation 4x² – 8x = 3

• a = 4, b = - 8, c = 3

• a = 4, b = - 8, c = -3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = - 3

Which of the following is not a quadratic expression in one variable?

• $4x^2+5x-2$

• $2x^3+5x-7$

• $0.7x+9x^2+3$

• $4x^2-9$

Which of the following is not a quadratic expression in one variable?

• $\frac{2}{3}y^2-5$

• $3x^2+x^{-2}$

• $p\left(3-2p\right)$

• $-\frac{1}{3}k^2+4k$

Which graph represents

 $f\left(x\right)=2x-x^2$  ?

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What is the y intercept?

y = -8x² + 3x - 7

• -8

• 3

• 7

• -7

Standard form of a quadratic equation

• y = x²

• y = ax² + bx + c

• y = mx + b

• y = x

Which of the following is a quadratic equation?

• $x^2-6x+8$

• $2x^2=5$

• $\frac{3}{x^2}-x=0$

• $9x+7=0$

Determine the values of a, b, and c for the quadratic expression  $1-x\ -2x^2$   

• a = 1, b = -1, c = - 2

• a = - 2,  b = -1, c = 1

• a =  2, b = 1, c = -1

• a = 1, b = 1, c = 2