Question 108161
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

{{{9C-5F+160=0}}}divide both sides by {{{9}}}

{{{(9/9)C-(5/9)F+(160/9)=0/9}}}

{{{C-(5/9)F+17.8=0}}}

{{{C=(5/9)F -17.8}}}


b) Graph this relation 

*[invoke Plot_a_graph_of_functions "(5/9)x-17.8", -5, 35, -20, 10]

c) Identify the slope and the C intercept and explain what they mean

since our equation is in the slope-intercept form ({{{y = mx + b}}}), 

where {{{m=slope}}} and {{{b=y-intercept}}}, we have slope {{{m = 5/9}}} and y-intercept is {{{b = - 17.8}}}