Water boils at 212 degrees Farenheit at sea level. At a height of 1100
feet, water boils at 210 degrees Farenheit. The relationship between
the boiling point and height is linear.
a) Find the equation for the boiling point B(x) of water in terms of
the height, x, in feet.
b) Find the boiling point of water (elevation 42 feet)
I need to show work. Thanks

Equation for a line: F(x)=ax+b where a is the slope and b is the y-intercept.

Solve for slope: dy/dx = (210-212)/(1100-0) = -0.001818181818...

Y-intercept of course is at 212.

So, we have F(x) = -0.001818181818x + 212

F(42) = 211.923636363636... degrees Farenheit