How does the graph change between point A and point B.

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

the answer is b.6

step-by-step explanation:

this would be 35. 35 + 5 = 40. you take the known constant and subtract by the answer of the equation and you get y.