The graph of a linear function f passes through the point (3, -10) and has a slope of -5. What is the zero ? A. 1

B. -1

C. 5

D. -5

Really need help.

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