How do you express a ratio

Step-by-step explanation:

One way to write a ratio is as a fraction:

Example:

Another way is by writing it using the word "to," as "9 to 6."

The most common way or the one you will see the most is the using a colon between the two numbers, 9 : 6.

Now let me be clear that all three of these ways are actually saying the EXACT SAME THING!!!

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50