Answer:
a) -3n + 7
b) -5n -2
Explanation:
a) 4 1 -2 -5 -8
the difference = -3
the -3 times table = -3, -6, -9, -12 etc
from -3 to 4 we add 7
answer = -3n + 7
check = -3(4) + 7 should give -5 (because -5 is the 4th term in the sequence)
b) -7 -12 -17 -22 -27
the difference = -5
-5 times table = -5, -10, -15, -20
from -5 to -7 we subtract 2
answer = -5n -2
check = -5(5)-2 should give -27 (because -27 is the 5th term in the sequence)