Answer: m=-11
Step-by-step explanation:
To find the slope of the line, you want to use formula 
. Since we are given two points, we can directly plug them in and solve.
Now, we know that the slope is -11.
x < -9 or x > 7
x + 1 < -8
x < -9
x + 1 > 8
x > 7
... when the inequality sign is facing the x, x is GREATER and it resembles an OR statement. I personally like to think of it as: greater than (greatOR than) = or statement; less than (less thAND) = and statement.
The answer is a whole number, and it happens to be 1
This is an Arithmetic Progression with 1st term 11 and common difference d=6
Number of Rows Number of seats Common difference " d"
----------------------- ----------------------- -------------------------------------
1st a₁ = 11
2nd a₁+d =17 d =2nd - 1st = 6
3rd a₁ +2d = 23 d =3rd - 2nd = 6
4th a₁ +3d = 29 d= 4th - 3rd = 6
-------------------------------------------------------------------------------
nth ROW a(n) = a₁ + (n-1)d
18th ROW a₁₈ = 11 + (18-1).6 = 11+(17)(6) = 113
General equation to predict the number of seat an the nth row:
Number of seats in nth row = a₁ + (n-1).d
100 ; you are adding 20 every time, therefore if you add 80 plus 20 you get 100. :)
