There are 31 chairs in the row a and 37 chairs in row b at a famous concert hall. with each additional row, the number of chairs increases by 6.

write the first 5 numbers of this sequence.

then write the explicit and recursive rule for this question.

check the picture below.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18