Answer:
[tex]y=740x-400[/tex]
Step-by-step explanation:
The story tells us that Boa drove from the Dead Sea up to Jerusalem. With the data provided, we can assume a linear relationship between altitude and the number of hours. We are given two key data: one point and the rate of change (or slope).
We can easily find the equation of a line with slope m passing through a point (a,b) by using the formula
[tex]y-b=m(x-a)[/tex]
In this case, y is the altitude above sea level, and x is the number of hours of driving
The value of m is 740 meters/hour and the known point is x=1.5 hours, y=710 meters. Using these values
[tex]y-710=740(x-1.5)[/tex]
[tex]y-710=740x-1110[/tex]
[tex]y=740x-400[/tex]
