In the expression 2ab + b - 3b2 + 4, the coefficient of b is:

coefficient of b

there are 3 b's in this expression so there will be 3 coefficient

in 2ab it will be 2a

in b it will be 1

in -3b2 it will be -3

ccc

so the coefficients are 2a , 1, -3

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.