TI84-Standard form and point-slope (two-point) form to graph

ClrHome
Disp " ------------------------ ","         GRAPHER         "," ------------------------"
Disp "1 for slope-intercept"
Disp "2 for standard form"
Disp "3 for two-point form"
Disp "4 for point-slope"
Prompt Q
ClrHome
If Q=1:Then
Disp "y=Mx+B"
Disp ""
Prompt M,B
"MX+B"→{Y1}
DispGraph
Else:If Q=2:Then
Disp "Ax+By=C"
Disp ""
Prompt A,B,C
"(C-AX)/B"→{Y1}
DispGraph
Else:If Q=3:Then
Disp "whatever the equation for this is"
Disp ""
Prompt X,Y,A,B
(B-Y)/(A-X)→M
(-XM)-(-Y)→B
"MX+B"→{Y1}
DispGraph
Else:If Q=4:Then
Disp "y+B=M(x+A)"
Disp ""
Prompt B,M,A
"MX+(MA)-B"→{Y1}
DispGraph
Else:Disp "invalid!"