Answer 18 19 and 20 and 21 if you can! offering many points! need fast, algrebra 1

review of numbers;

whole number: 0,1,2,3,4,5, etc

integers: whole numbers and their negatives so -5,-4,-3,-2,-1,0,1,2,3,4...

rational numbers: numbers that can be written in form a/b where a and b are integers, so like 1/2 and 3/5

real numbers: includes rational numbers and irrational numbers like pi

18

x values are -3,-2,-1, 0, 1 which are integers

19. for y=x+3, you cand use any real number, so the answer would be real numbers

20.I don't know what error our friend made since the plots are correct but the red loines are wrong

21. just connect the dots on the plot, plot (0,3), (1,4) and connect the dots witha line

2nd one in the first row is correct