Match each function to all of the function types it belongs to. f(x) = 2x + 3
f(x) = x2 + 2x − 3
f(x) = 3x − 2

Kilgore trout creates a new scale to diagnose depression. however, his scale only assesses one symptom of depression while ignoring others. which of the following is his new scale most likely lacking? a) test-retest reliability b) discriminant validity c) criterion validity d) alternate-forms reliability e) content validity f) none of the above