N 18. Answer the questions by comparing the equation, ft) = 7 cos Rz) = 7cos(? (2 +9)
+1, to the general equation, f(x) =acos
+d.
What direction and how many units did the graph shift vertically?
7 units up

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)

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

you are uyytr tyy

step-by-step explanation: