2-1 adding rational numbers

Question 1

additive inverse

Answer 1

The opposite of a number

Question 2

matrix

Answer 2

a rectangular arrangement of numbers in rows and columns.

Question 3

element

Answer 3

each item in a matrix

Question 4

identity property of addition

Answer 4

-5+0=-5 0+5=5

Question 5

inverse property of addition

Answer 5

17+(-17)=0 -17 +17=0