(x, y)ä¸ eBook The following guidelines for your graphing calculator may be helpful to find the x-intercept For the TT-83/84: Input the linear equation in the Y- graph menu. After graphing the linear equation, press 2nd CALC and select 2:zero, then press ENTER. At the lower part of the screen you will see "left bound?" and a blinking cursor on the graph of the line. Move this cursor to the left of the x-intercept, hit ENTER. Now it says "right bound?" Move the cunsor to the right of the x-intercept, hit ENTER. Now it says "guess?" Move your cursor to the left somewhere in between the left and right bound near the x-intercept. Hit ENTER. At the bottom of your screen it wii display the coordinates of the x-intercept or the "zero" to the y-value (Note: With linear/straight line functions the zero is not really a "guess," but is boundare, wah ether types of functions (more than one ritercept), they may be rational numbers so-guess,s more approprate to give the correct limits to find. very close For the T1-89: Input the linear equation in the Y- graph menu. When viewing the graph of the inear equation, press FS and select 2 zero then press ENTER. At the lower part of the screen will see "lower bound? and a blinking cursor on the graph of the ine. Move this cursor to an x-value less than the x-interoept, ht ENTER. Now it says "upper greater than the x-intercept·NE ENTER. At the bottom of your screen " will display the coordinates of the x-intercept or the "zero" to the r.value. Book