Algebra 1 STAAR Review 2021
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Questions and Answers

When is a function y=f(x) even?

when f(-x)=f(x)

When is a function y=f(x) odd?

when f(-x)=-f(x)

What is the quadratic formula?

X=-b±√b²−4ac/(over)2a

Study Notes

Function Properties

  • A function ( y = f(x) ) is even if ( f(-x) = f(x) ), indicating symmetry about the y-axis.
  • A function ( y = f(x) ) is odd if ( f(-x) = -f(x) ), indicating symmetry about the origin.

Quadratic Formula

  • The quadratic formula is used to find the roots of a quadratic equation ( ax^2 + bx + c = 0 ).
  • Expressed as: ( X = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} ).
  • The discriminant ( b^2 - 4ac ) determines the nature of the roots:
    • Positive: Two distinct real roots.
    • Zero: One real double root.
    • Negative: No real roots (complex roots).

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Description

This quiz covers essential concepts for the Algebra 1 STAAR exam, including the definitions of even and odd functions and the quadratic formula. Use these flashcards to reinforce your understanding and prepare effectively for the test.

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