Let's take a look at the four ways we can transform a tangent function and graph. A changes the amplitude, or how steep the graph is along the y axis. B changes the period, or how wide one pattern of the graph is. C changes the phase shift, or how the graph is shifted to the left or the right. D controls the vertical shift, or how the graph is shifted up or down.
Wear your corrective lenses to see where you are going or it won't be just eyes hurt. Floaters, the little bits of scar tissue in the jelly of the eye that lead or lag behind the motion of the eye thus drift or float are made worse in excessive eye rubbing or worse can lead to retinal tears or detachment. Avoid this practice. Treat the itching if that is what the problem is in the first place.
See an MD if you: -Suddenly lose all or part of your vision. You might have a retinal detachment, which could lead to blindness. -See flashing lights and a bunch of floaters at onceâalso a red flag for retinal detachment. -Have sharp pain in or around your eyes. This could mean a corneal ulcer or infectionâespecially if you wear contacts, or if you have blurred vision, tearing, redness or dischargeâand might result in vision loss or blindness.