document.write( "Question 236552: Attempting to find domain/range answers, points are (1,-1),(7,3). Problem is to find the following:
\n" ); document.write( "a. f(4)=
\n" ); document.write( "b. What is the domain? {x|_}, determine all x values such that f(x)=1
\n" ); document.write( "c. x=
\n" ); document.write( "d. What is the range? {y|_}
\n" ); document.write( "Please advise and thank you!
\n" ); document.write( "

Algebra.Com's Answer #174100 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Attempting to find domain/range answers, points are (1,-1),(7,3).
\n" ); document.write( "Find the equation:
\n" ); document.write( "slope = (3--1)/(7-1) = 4/6 = 2/3
\n" ); document.write( "intercept = ?
\n" ); document.write( "-1 = (2/3)(1) = b
\n" ); document.write( "b = (-5/3)
\n" ); document.write( "So, Equation is f(x) = (2/3)x - (5/3)
\n" ); document.write( "----------------------------------------------\r
\n" ); document.write( "\n" ); document.write( "Problem is to find the following:
\n" ); document.write( "a. f(4)= (2/3)(4)-(5/3) = 8/3 - 5/3 = 1
\n" ); document.write( "------------------------------------------------
\n" ); document.write( "b. What is the domain? {x|all Real Numbers};
\n" ); document.write( "-----------
\n" ); document.write( "determine all x values such that f(x)=1
\n" ); document.write( "(2/3)x-(5/3) = 1
\n" ); document.write( "2x - 5 = 3
\n" ); document.write( "2x = 8
\n" ); document.write( "c. x = 4
\n" ); document.write( "------------------------------------------------
\n" ); document.write( "d. What is the range? {y|all Real Numbers}
\n" ); document.write( "Note: Any linear equation that does not have a zero slope
\n" ); document.write( "has Domain = All Real Numbers and Range = All Real Numbers.
\n" ); document.write( "================================================================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" ); document.write( "
\n" );