linear equation

Question

A temperature increase of 9⁰F(Fahrenheit) is equivalent to a temperature increase of 5⁰C(Celsius). Moreover, 32⁰F and 0⁰ are both the freezing point of water. Use the information to find a linear equation that relates F to C and use this to determine the boiling point of water in degrees Fahrenheit.(Hint: Water boils at 100⁰C.

Answer 1

F= 9C/5 + 32 = 1.8C+32

F=9(100)/5 + 32 = 9(20) + 32 = 180+32 = 212

or

C = (5/9)(F-32)

100=(5/9)(F-32)

900/5 = F-32

F = 180+32 = 212