Question

Complete the point-slope equation of the line through (-4, 8) and (4, 4).

Use exact numbers.
y-4=

Answer 1

y-4=-1/2(x-4)

Explanation:

point slope form: y-y1=m(x-x1)

every time x increases by 8, y decreases by 4. slope can be found by rise/run. the slope is -4/8 which is -1/2, which means m=-1/2. in the given equation, it said y-4. It plugged in 4 for y1, meaning it was talking about the second given point, which was (4,4). plug in 4 for x and you get y-4=-1/2(x-4)