Answer: -2
Step-by-step explanation:
The equation of a line in slope - intercept form is given as :

where m is the slope and c is the y - intercept.
Equation given :

⇒ 
add 9 to both sides , we have


comparing with :

slope = -2
Your answer would be 36.8. All you need to do is add up all of the sides with a calculator.
-7=7s+28
-28 -28
-35=7s
-35/7 7s/7
s=-5
The answer is B. bc you are adding 7 each time
The answer to this is -7/5