If f(x) is a linear function, which statement must be true?
a. fx) has no constant term
b. f(x) has no x_term.
c. f(x) has no terms with a coefficient other than 1.
d. f(x) has no x-term.

The statements look all false:

A linear function can have constant terms, which is the b coefficient in the expression y=mx+b. For example, y=3x+5 has a constant term 5A linear function has a x term. In the same example as before, 3x is the x termThe coefficients can be different from 1. In the example before, the x coefficient is 3 and the constant term is 5.This looks like option b. Maybe there was a typo, and either b or d must be true.

Skew lines(segments) are lines(segments) in 3 dimensions that do not intersect the given segment and are not parallel to it.  ae, bf, eg, and fh are your skew segments.  i hope that : )