A train departs from New York City and travels toward Chicago traveling at an average speed of 75 miles per hour. What best desc
ribes the train's distance from Chicago as time increases?
2 answers:
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This is an linear equation, so
y=mx + b
m= money w=weeks
m= -20w +200
y=mx + b
m= money w=weeks
m= -20w +200
Answer:
Option B. 7.6
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
where
k is the constant of proportionality
The slope of the linear equation is the same that the constant of proportionality
In this problem we have
so
the slope is
therefore
The constant of proportionality k is