Start at -7, add 9 each time:

  _____   _____   _____   _____   _____      -7  2  11  20  29

 
 Start at -3, add -3 each time:

  _____   _____   _____   _____   _____      -3  -6  -9  -12  -15

 
 Start at 6, add 4 each time:

  _____   _____   _____   _____   _____      6  10  14  18  22

 
 Start at 0, add 2 each time:

  _____   _____   _____   _____   _____      0  2  4  6  8

 
 Start at 6, add -1 each time:

  _____   _____   _____   _____   _____      6  5  4  3  2

 
 Start at 9, add 7 each time:

  _____   _____   _____   _____   _____      9  16  23  30  37

 Lines = 6  Problems = 30 Number Correct _____ Number Wrong _____