Computef '(x)algebraically for the given value of a. Hint [see examples 1 and 3. ]f(x) =−4x; a = 1f '(a) =.

Question: a) does the given set of points represent a linear function? how do you know? b) assume that the point (-2,4) lies on the graph of a line. what y-values could complete this set of ordered pairs that lie on the same line: (- (hint: there are several correct answ

Evaluate cos2θ for cosθ = square root of 3/2

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?