SOLUTION: HI please help me with this.THankyou The equation 9C-5F+160=0 describes the relationship between tempreature,C, in degrees Celsiu, and the tempreature , F, in degrees fahre

Algebra ->  Linear-equations -> SOLUTION: HI please help me with this.THankyou The equation 9C-5F+160=0 describes the relationship between tempreature,C, in degrees Celsiu, and the tempreature , F, in degrees fahre      Log On


   

Question 108162: HI please help me with this.THankyou


The equation 9C-5F+160=0 describes the relationship between tempreature,C, in degrees Celsiu, and the tempreature , F, in degrees fahrenheit.


a) express the equation in the form C=mF+b
b) Graph this relation
c) Identify the slope and the C intercept and explain what they mean
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
9C-5F%2B160=0
9C-5F%2B5F%2B160-160=5F-160 Add (5F-160) to both sides.
9C=5F-160 Simplify.
C=5F%2F9-160%2F9 Divide both sides by 9.
a)C=5F%2F9-17.8 Simplify.
b)
+graph%28+300%2C+300%2C+-40%2C+260%2C+-40%2C+160%2C+5%2F9%2Ax-17.8%29+
c.) The slope is the number is the coefficient of F in equation a or 5/9.
It relates the rate of change in each temperature system.
For a change of 9 degrees Fahrenheit, you get a 5 degrees change in Celsius.
The C intercept is where the graph crosses the y axis. The value of C when F=0. C(0) is the equivalent temperature in Celsius to 0 F. In this case,
C=5F%2F9-17.8
C=5%280%29%2F9-17.8
C=-17.8