Texas Instruments TI-84 Plus Silver Edition Graphic Calculator "err sign change" Questions

err: no sign chng I tried to find the zero of an equation and I put (x-8)^2 into my y= and hit graph.i went to second trace set my bounds, but i got the err no sign change. btw, my window reads; Xmin=

...ERR:SYNTAX please help. im trying to solve linear systems by graphing. Try rewriting your equations in the equivalent forms that follow. Y1=3-X Y2=(1-X)/3 If you do not get a syntax error it means ...

ERR: No Sign change... I am trying to find the intersection of -0.171x-+43.43 and -0.146x+39.83. I entered them into my "y=" and clicked graph. I then plug in "2nd trace, and click on intersect" But i

err:syntax when I try to graph with ''-'' on ti-84 plus Hello, The calculator has two minus signs The regular MINUS sign which is used with the subtraction operation. This operation is binary, ...

...err: Window Range Press the [Zoom] function key and select [6:ZStandard]. The default window dimensions will be restored: to Xmin=-10, Xmax=10, Xscl=1. Ymin=-10, Ymax=10, Yscl=1, Xres=3, ...