Number System Review

Positive - gain, increase, deposit, accelerate, ascend, above sea level, above freezing, rise

Negative - loss, decrease, withdrawal, decelerate, descend, below sea level, below freezing, drop

same distance from zero, but in the opposite direction

- (-5) = 5

- ( 6) = -6

Which would you rather have?

a loss of 5 or a loss of 10?

-5 -10

-5 > -10

Who lost the most to who gained the most

-100, -50, -25, 0, 20, 40, 60

How far a value is from zero.

| -4 | = 4

|4| = 4

| x | = 16 x could be 16 or -16

same sign, subtract

distance from -2 to -10 10 - 2 = 8

distance from 14 to 8 14 - 8 = 6

Opposite signs, add

distance from -3 to 7 3 + 7 = 10

(x,y) if the x values match, ignore them

(1, 2) and (1, -3) are 5 units apart

(x,y) if they y values match, ignore them

(4, -5) and (5, -5) are 1 unit apart