# SOLUTION: When substituting for a variable in a function graph, how do I select the correct substitution for the variable. Example: f(x)=-7(x) When making a graph, I am not sure how to

Algebra ->  Algebra  -> Expressions-with-variables -> SOLUTION: When substituting for a variable in a function graph, how do I select the correct substitution for the variable. Example: f(x)=-7(x) When making a graph, I am not sure how to      Log On

 Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help! Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

 Algebra: Expressions involving variables, substitution Solvers Lessons Answers archive Quiz In Depth

 Question 140887: When substituting for a variable in a function graph, how do I select the correct substitution for the variable. Example: f(x)=-7(x) When making a graph, I am not sure how to get the input, and output.Answer by stanbon(57219)   (Show Source): You can put this solution on YOUR website!When substituting for a variable in a function graph, how do I select the correct substitution for the variable. Example: f(x)=-7(x) ------------------------ You give a value to x and find a value for f(x) based on the equation. For example: If x = 0, y = -7*0 = 0 If x = 2, y = -7*2 = -14 If x = 100, y = -7*100=-700 ====================== Cheers, Stan H.