If -3 + i is a root of the function f(x), which of the following must also be a root of f(x)?
Answer Choices:
A. -3 - i
B. -3i
C. 3 - i
D. 3i

answer: a. 74

step-by-step explanation:

it shows divided evenly, so add the 37+37 = 74

d

step-by-step explanation:

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)