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Level 208

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compound inequality

Two separate inequalities joined by AND or OR.

equivalent inequalities

Inequalities that have the same solutions

inequality

A mathematical sentence that shows the relationship between quantities that are not equivalent

intersection

The graph of a compound inequality with "and" in which the solution is the overlapping or what is shared.

solution of an inequality

Any number that makes the inequality true

union

The graph of a compound inequality with "or" in which the solution is all points that satisfy one or the other or both inequalities.

2n+6<4

n<-1

5n-4>11

n>3

2x+5<6

x<1/2 or x<0.5

Towards the larger numbers (right)

If the inequality is 2<x, which way do you draw the arrow on the number line?

-7x>-21

x<3

42>6+9x

4>x

open circle

< and > uses what type of circle

closed circle

< and > underlined is what type of circle

Negative

Counting from the decimal point to the left makes the exponent ___________________________________

x < 3

2x + 1 < 7

n-5<15

n<20

2x<9

X<4.5

x < -4

5x - 10 < -30

3-2x>17

x < -7

towards the smaller numbers (Left)

If the inequality is -4>x, which way do you draw the arrow on the number line?

less than

<; the number to the left is FEWER than the number to the right

less than or equal to

< that is underline stands for

greater than

>; the number to the left of the sign is MORE than the number to the right

greather than or equal to

> that is underline stands for

No

Does a line under < change the direction on the arrow

No

Does a line under > change the direction on the arrow

Coefficient

The inequality will change only if the _______________________ is negative.