The slope of a line is –4 and its y-intercept is (0, 4). What is the equation of the line that is perpendicular to the first line and passes through (–8, 2)?

Question

anonymous · Answer

If we want our line was perpendicular to a line we have this :
New m=-1/m1
Means : m.m1=-1
and our m is 1/4
Got it ?

anonymous · Answer

There is a law in mathematical statistics if a line is perpendicular to a line then the products of their respective gradients is -1

anonymous · Answer

therefore the gradient of the line = -4 * x = -1
x= 1/4

anonymous · Answer

y = 0.25x +c   (where c is the y intercept)

anonymous · Answer

I think I said that ??!

anonymous · Answer

By substituting  (–8, 2) these co- ordinates into the equation u will get the answer in the form of y = mx + C

anonymous · Answer

thank you guys  i understand now