Is the following relation a function?
two circles are shown, one labeled x and the other labeled y. the x circle contains the numbers 6, negative 1, 4, and 0. the y circle contains the numbers 2, negative 1, and 3. arrows map numbers from x to numbers from y. there are arrows going from 6 to negative 1, from negative 1 to 2, from 4 to 3, and from 0 to 3.
answer

yes

no

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.

For the equations below which statement is true ? -2x=14 6x=-42

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)