Given the function f(x)= x^2− 4x + 1, find: a) the coordinates of Point A, where x = 3
b) the coordinates of Point B, where x = 5
c) the equation of the secant AB
d) the equation of the tangent at Point A
e) the equation of the tangent at Point B

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6

answer: 5/2     2 1/2

step-by-step explanation:

5/2              

5 goes into 2 two times so its 2 and 1/2