John is going on a trip and the country he is traveling to uses the celsius scale. he is curious about converting celsius temperatures to fahrenheit. john determines 68°f is equivalent to 20°c and 86°f is equivalent to 30°c. which function models the relationship between fahrenheit and celsius?

converts Celsius to Fahrenheit.

converts Fahrenheit to Celsius.

Step-by-step explanation:

Write given data in the table

Let the expression for the function be

Note, that this equation is linear equation and it is well-known fact that the Celsius to Fahrenheit dependence is linear.

Substitute corresponding values into this expression:

Subtract these two equations:

Substitute it into the first equation:

So,

This is the function which converts Celsius to Fahrenheit.

And function

converts Fahrenheit to Celsius.

The answer is 9/5c + 32

i need the options

step-by-step explanation:

thats not a system of equations, that is a solution