All imaginary numbers can be written as complex numbers in the form a+bi. For the number 5i, what is the value of a and b?

Group of answer choices

a=5 and b=1

a=5 and b= 0

a=0 and b=5

a=1 and b=5

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.