Inequalities

Life

100

How long did the 100 Years War last?

116 years

200

What color are the black boxes on airplanes?

Are orange

300

In what month do Russians celebrate the “October Revolution”?

In November

400

Year of the 20th century that does not change if you turn the figures around

Is 1961

500

In which EXACT date (day month year) did WW2 finished in EUROPE

8th of May 1945

Math life

100

What is the most popular lucky number between 1 and 9?

Is the seven

200

An image that can also be seen in three dimensions?

A hologram

300

5. 53 divided by four equals how much?

Is 13

400

How many seconds are there in a day?

86,400 seconds

500

Who were the first people to use negative numbers?

Chinese people

Solving linear inequalities

100

5(x-3)>40

x>11

200

3(2x+7)<9

x<-2

300

4x+3>2x+11

x>4

400

7x-5>3x+11

x>4

500

-3<5x+4<4

-11<x<24

Graphing linear inequalities

100

x>y+5

(4,-1)(5,0)(6,1)

200

y<x+7

(-1,6)(0,7)(1,8)

300

y=x-9 

(-10,-1)(-5,4)(0,9)

400

 x=y-3

(-5,-2)(-3,0)(-1,2)

500

x=y-10

(-15,-5)(-10,0)(-5,5)

system of inequalities

100

y>x+7  y<-x+4

(-1,6)(0,7)(1,8) (-1,5)(0,4)(1,3)

200

x>-2y+5  y<4x-6

(7,-1)(5,0)(3,1) (-1,-10)(0,-6)(1,-2)

300

y<-5x-3+2     x>7y+3-2+5

(-1,5)(0,-1)(1,-6)    (-1,-1)(6,0)(13,1)

400

y≤2x−1

y≥−x+1

(1,0)(1,1)(2,0)

500

y≥x−2

y<−2x+4

(0,0)(1,1)(2,0)