Easier Way to Solve this Math Q?

Test Preparation SAT Preparation
1

<p>IS there a easy way? i had to plug in.</p>

<ol>
<li>Using the forumla C=5/9(F-32), if celsius increased 35, by how many degrees would Fahrenheit increase?</li>
</ol>

2

<p>Is the (F-32) part in the denominator/</p>

3

<p>To me, the best way seems to be to get F alone, so multiply both sides by 9/5 and then add 32 to both sides, getting (9C/5)+32=F. Then you can just put in 2 numbers (0 and 35 work) to figure out the answer. The difference between the 2 would then be 63 degrees.</p>

4

<p>yeah that’s sorta what i did basically.</p>

5

<p>C = (5/9)(F-32)
C is a linear function of F; its slope = rise/run
5/9 = 35/run
run = 63 <— that’s your corresponding increase in F.</p>

6

<p>Just thought of a cool and hot approach based on physics:
In C: water freezing point = 0 deg, boiling point = 100 deg, range = 100 deg
In F: water freezing point = 32 deg, boiling point = 212 deg, range = 180 deg</p>

<p>Proportion:
100 —> 180
35 —> x
x=63.</p>

7

<p>^^ For the geometrically inclined:
[url=&lt;a href=“http://www.freeimagehosting.net/][img]http://www.freeimagehosting.net/uploads/9138b3cacb.jpg[/img][/url”&gt;http://www.freeimagehosting.net/]

http://www.freeimagehosting.net/uploads/9138b3cacb.jpg

[/url</a>]
Celsius - on KL, Fahrenheit - on CB.
KL = 100
CB = 180
MN = 35
DE/MN = CB/KL
DE/35 = 180/100
DE=63</p>