Grade 9 Math Flashcard Bee Elimination Rond

Front

What is the standard form of a quadratic equation?

Back

ax² + bx + c = 0

Front

Standard form of the quadratic equation: x² -2x = 5

Back

x² -2x - 5 = 0

Front

Value of "a" in the quadratic equation 7x + 1 = - x² ?

Back

1

Front

Back

6 and 7

Front

x^2 - 10 = 15

Back

x = + 5

Front

Factors and solutions of x^2 + 2x – 3 = 0

Back

(x - 1)(x + 3) = 0; x=1, x=-3

Front

Back

16

Front

What is the first step to solving the equation by completing the square? a^2 + 10a + 21 = 0

Back

Subtract 21 from both sides

Front

The graph of a quadratic function is called ____________.

Back

a parabola

Front

A parabola has a vertex at (-3,2). Where is the axis of symmetry?

Back

x = -3