I need help with this URGENT

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.

Anyone know? will mark brainliest if correct!

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12