Expression 4: "Y" equals "N" minus "X" equals a list of numbers. 101 itemsY=N−X
equals=
2020
19.819.8
19.619.6
19.419.4
19.219.2
1919
18.818.8
18.618.6
18.418.4
18.218.2
1818
17.817.8
17.617.6
17.417.4
17.217.2
101 element list
4
Expression 5: "y" plus "X" minus "N" equals StartFraction, "N" minus "X" Over "X" , EndFraction left parenthesis, negative "x" , right parenthesis left brace, 0 less than "x" less than "N" , right brace left brace, 0 less than "y" less than "N" , right brace Has graph. To audio trace, press ALT+T.y+X−N=N−XX−x0<x<N0<y<N
5
Expression 6: StartRoot, "x" , EndRoot plus StartRoot, "y" , EndRoot equals StartRoot, "N" , EndRoot Has graph.x+y=N
6
Expression 7: 4 "x" "y" equals left parenthesis, "N" minus "x" minus "y" , right parenthesis squared Has graph. To audio trace, press ALT+T.4xy=N−x−y2