The formula of a slope:

We have the points (-4, -3) and (-3, s) and the slope m = 3. Substitute:
Answer: 
Step-by-step explanation:
For this exercise you need to remember:
1) The mulitplication of signs:

2) By definition, like terms contain the same variables with the same exponent.
Then knowing this, and given the equations:
and 
You must subtract the like terms, which means that you must subtract the numerical coefficients of each term.
Then, you get the result is:

Answer:
Step-by-step explanation:M angel 7 = 60 degrees, angle 1 is 60 as well because it is vertical. So your answer is A: 60. I hope my answer helped you. ;).
The value of x equals 30.
Step by Step explanation:
All sides are equal so you know the angle lengths are equal. When you multiple 2x by 3 you get 6x. All angles of a triangle add up to 180 so you divide 180 by 6 and you get 30. Hope This Helps!