Hello :
the sum is arithmetic secquence of common -diff is :
(-7)-(-5) =(-5)-(-3) = (-3)-(-1) =-2 = d
the first term is : a1 = -1
<span>the formula of the sum : S= (n/2)(a1 +an)
n is number of term an = a1+(n-1)d</span>
(2m + 7) - (3 - 4m) = 2m + 7 - 3 + 4m = (2m + 4m) + (7 - 3)
= <u>6m + 4</u>
Answer:
slope: 
equation: 
Step-by-step explanation:

- point-slope form of Equation of the Line

1/9-22/9-5/9
-21/9-5/9
-26/9