Question

find equations for the tangent and normal to the graph of f at (a, f(a))

f(x) = |x| a=-4

Answer 1

topic: tangent/normal lines

i am just confused with the absolute value of x incoporating it into this equation

Answer 2

from the graph it is clear that the slope of equation at a=-4 is -1so tangent equation is y=-x and normal is y=x+4

Answer 3

i dont understand what your trying to explaing to me