51 is the interquartile range for the set of data hope this helps;)
The correct system of equations is:
g = w + 8
g = w − 2
The best way to solve this would be by the use of a table.
x) 1 2 3 4
y) 9 15 21 27
As you can see, the y value increases by 6 each time. Therefore d=6 or the common difference is 6
The correct answer should be the first option.
The y intercept is 0
Y = mx + b
m = 7, there is no b