Pleas help thx need asap!

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

What is the slope of a line that is perpendicular to y = 3x + 1

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.