Answer:
y = 740x - 400
Step-by-step explanation:
You need to find what b(the y-intercept) is in the equation.
y = mx + b, where x is the time in hours and m is your slope
They told us the slope m(the rate of change), which is constant at 740 meters per hour. Think of a straight line with a positive slope. We just need to find b.
We know that when x = 1.5, y = 710 meters above sea level. Write this as (1.5, 710) and substitute in your equation to find b.
y = 740x + b
710 = 740(1.5) + b
710 = 1110 + b
-400 = b
Now put together the entire equation since you have all the info you need using the slope intercept form: y = mx + b
Therefore, y = 740x - 400
