1st Periodic Test Flashcards

Grade 9 (33 cards)

1
Q

Mathematical phrase

A

Expression

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2
Q

Mathematical sentence

A

Equation

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3
Q

NO equal sign
Can be evaluated but not solved

A

Expression

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3
Q

Has an equal sign
Can usually be solved

A

Equation

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4
Q

Degree of Linear

A

1

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5
Q

Graph of a quadratic

A

parabola

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5
Q

Degree of Quadratic

A

2

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6
Q

Graph of a linear

A

straight line

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7
Q

Solution for Linear

A

1

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8
Q

Solution for Quadratic

A

2

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9
Q

Ax²

A

Quadratic Term

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10
Q

Bx

A

Linear Term

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11
Q

C

A

Constant

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12
Q

Standard form of Quadratic

A

Ax² + Bx + C = 0

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13
Q

the square root of negative 1.

A

imaginary number ( i )

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14
Q

Square roots of positive numbers

A

Perfect Squares

15
Q

the number that, when multiplied by itself, gives the original number.

15
Q

√16

16
Q

the graph intersects the x-axis twice

A

two distinct roots

16
Q

For any real number a and b, if ab = 0, then a = 0 or b = 0; and if either a = 0 or b = 0 then ab = 0.

A

Zero Product property

17
Q

To extract square roots of negative numbers, you include

17
Q

the graph intersects the x-axis once

A

One real root

18
Q

The nature of the roots of a quadratic equation is determined by the discriminant of the quadratic equation.

A

The Discriminant of the Equation

19
Q

the graph does not intersect the x-axis

A

Imaginary root

20
16 (perfect square)
two distinct rational roots
21
0 (zero)
one real root
22
21 (not a perfect square)
two distinct irrational roots
23
-10 (a negative number)
imaginary roots
24
formula for discriminant
b² - 4ac
25
forrmula for sum of equation
-b / a
26
formula for product of equation
c/a
27
quadratic formula
-b ± √b² - 4ac / 2a
28
completing a square form
ax² + bx = c