# Celsius to Fahrenheit

• November 5th 2009, 09:34 AM
dkpeppard
Celsius to Fahrenheit
I am assuming I can use some of the same information from my velocity of a bullet question for this since this is also a linear equation, correct?

Water freezes at 0°C or 32°F and boils at 100°C or 212°F. There is a linear equation that expresses the number of degrees Fahrenheit (F) in terms of the number of degrees Celsius (C). Find the equation and find the Fahrenheit temperature when the Celsius temperature is 45°.

• November 5th 2009, 09:41 AM
masters
Quote:

Originally Posted by dkpeppard
I am assuming I can use some of the same information from my velocity of a bullet question for this since this is also a linear equation, correct?

Water freezes at 0°C or 32°F and boils at 100°C or 212°F. There is a linear equation that expresses the number of degrees Fahrenheit (F) in terms of the number of degrees Celsius (C). Find the equation and find the Fahrenheit temperature when the Celsius temperature is 45°.

Hi dkpeppard,

Here's what you need:

$F=\frac{9}{5}C+32$

I'm sorry. I guess you were needing to discover the formula. Okay then. Find the slope using your two points.

Substitute the slope and (0, 32) into y = mx + b to find the y-intercept. Then you'll arrive at the above formula.
• November 5th 2009, 10:01 AM
dkpeppard
Quote:

Originally Posted by masters
Hi dkpeppard,

Here's what you need:

$F=\frac{9}{5}C+32$

I'm sorry. I guess you were needing to discover the formula. Okay then. Find the slope using your two points.

Substitute the slope and (0, 32) into y = mx + b to find the y-intercept. Then you'll arrive at the above formula.

Thank you for the quick response.

I will review this formula and plug it into my problem to find the Fahrenheit when Celsius = 45.

Thanks again for the quick response.
• November 5th 2009, 10:30 AM
dkpeppard
Quote:

Originally Posted by masters
Hi dkpeppard,

Here's what you need:

$F=\frac{9}{5}C+32$

I'm sorry. I guess you were needing to discover the formula. Okay then. Find the slope using your two points.

Substitute the slope and (0, 32) into y = mx + b to find the y-intercept. Then you'll arrive at the above formula.

Again, many thanks.

So, in working out the problem, this is what I found:
Using $F=\frac{9}{5}C+32$, I need to find out F if C is 45.

So, $F=\frac{9}{5}(45)+32 = 113$

F is 113 if C is 45.

Would you agree?
• November 5th 2009, 12:09 PM
masters
Quote:

Originally Posted by dkpeppard
Again, many thanks.

So, in working out the problem, this is what I found:
Using $F=\frac{9}{5}C+32$, I need to find out F if C is 45.

So, $F=\frac{9}{5}(45)+32 = 113$

F is 113 if C is 45.

Would you agree?

It would seem so. Good job!
• November 5th 2009, 02:49 PM
dkpeppard
Quote:

Originally Posted by masters
It would seem so. Good job!

Thank you.