Red light of wavelength 633 nm from a helium-neon laser passes through a slit 0.330 mm wide. the diffraction pattern is observed on a screen 3.50 m away. define the width of a bright fringe as the distance between the minima on either side.

. a function is a relation in which each input has only one output. in the relation , y is a function of x, because for each input x (1, 2, 3, or 0), there is only one output y. x is not a function of y, because the input y = 3 has multiple outputs: x = 1 and x = 2.

i believe it is b, but i could be wrong. im pretty sure im right tho. ; )