Answer:
a. 
b Slope:
or 
Step-by-step explanation:
The equation of a line that passes through the origin is:

Where "m" is the slope of the line.
By definition, Direct variation equations have the following form:

Where "k" is the Constant of variation.
Then, you can conclude that:

a. Let be "d" the distance in miles that the train travels per gallon.
You can observe in the graph that when the train travels 10 miles, it uses 100 gallons. Then, you can set up the following proportion:

Solving for "x", you get:

Then, it travels 0.1 miles per gallon.
b. The slope is also
or
. To check this, you can subsitute the coordinates of the point (100,10) into
and solve for "m" in order to find its value.
This is:

Answer:
first cable- 59ft
second cable-41 ft
Step-by-step explanation:
so you have x+18 which is the first cable and x which is the second cable
x+18+x=100
2x+18=100
2x=82
x=41
plug in x
first cable- 59ft
second cable-41 ft
Answer:
x=1
Step-by-step explanation:
hope this helps :)
The answer you are going to be looking for with this question is 16.4. Hope this helps you out a little :)
Angle 1 and angle 2 are a linear pair, which make a sum of 180
angle 2=180-angle 1=180-70=110