4. A search and rescue helicopter is flying at an altitude of 300 m. A campfire is spotted from the helicopter at an angle of depression of 27.5º. If the helicopter lands
directly below the point where it is when it spots the fire, how far does the crew
have to travel to reach the campfire to the nearest metre?

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)

6x = 48

i hope this . 6 cards each and a total of $48. dvide each side by 6 and you will have your answer.