Here the answers I hope this helps!
For this case we have that by definition, the equation of a line in the slope-intersection form is:

Where:
m: It is the slope
b: It is the cut point with the y axis
The slope is: 
Thus, the equation is of the form:

We substitute the given point and find "b":

Finally, the equation is:

Answer:

Answer:
Step-by-step explanation:
The answer is 2.2
Answer: 44.02
Step-by-step explanation: (6.4+7.8)x6.2÷2=44.02