Answer:
6 
Step-by-step explanation:
Use the triangle area equation

plug in the base (4ft) times the height (3ft) then divide by two
(1) The train travels 4 miles per gallon.
(2) The slope of the graph is 
Explanation:
(1) The miles that train travels per gallon is given by

Dividing, we have,

Thus, the train travels 4 miles per gallon.
(2) To determine the slope, let us consider two points from the graph.
The coordinates are
and 
Thus, substituting the coordinates in the slope formula, we get,

Simplifying, we have,

Thus, the slope of the graph is 
Answer:
1 over 3 3/4 = 4 over 15
Step-by-step explanation:
Domain is the set of names
Range is set of times
The rule of the equation of the line is y=mx+b but since we don't have a B so it will be y=mx so in order to solve it you need to exchange the ordered pairs
X=4, y=3
so 3=m(4)
so the slope which is m
m=4 over 3 (4/3)