B1: "B" Subscript, 1 , Baseline equals left parenthesis, negative 1 , "f" left parenthesis, negative 1 , right parenthesis , right parenthesis equals left parenthesis, negative 1 , 0 , right parenthesis Has graph. To audio trace, press ALT+T.B1=−1,f−1
Label:
equals=
left parenthesis, negative 1 , 0 , right parenthesis−1,0
2
Expression 3: polygon left parenthesis, "B" Subscript, 1 , Baseline , left parenthesis, 1 , negative 1 , right parenthesis , right parenthesis Has graph.polygonB1,1,−1
3
Expression 4: polygon left parenthesis, left parenthesis, 1 , "f" left parenthesis, 1 , right parenthesis , right parenthesis , left parenthesis, 3 , 1 , right parenthesis , right parenthesis Has graph.polygon1,f1,3,1