are linear functions straight lines
are linear functions straight lines, are all linear functions straight lines, do linear functions have to be straight, are all functions straight lines, are straight lines functions, is a linear line a function, is a linear line straight, which linear function represents the line, which is true of linear functions, is a linear function
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are linear functions straight lines
are all linear functions straight lines
do linear functions have to be straight
are all functions straight lines
are straight lines functions
is a linear line a function
is a linear line straight
which linear function represents the line
which is true of linear functions
is a linear function
are linear functions straight lines, are all linear functions straight lines, do linear functions have to be straight, are all functions straight lines, are straight lines functions, is a linear line a function, is a linear line straight, which linear function represents the line, which is true of linear functions, is a linear function