Which graph represents a negative linear association between x and y? graph a graph b graph c graph d

First, only graph's a and b are linear, meaning the change in each step is the same. This eliminates graphs c and d, which are both exponential.
Next, we need to determine which graph is a negative relationship. In a negative relationship, small values of x mean large values of y and large values of x mean small values of y; this also means the slope is negative. This means graph b has all the properties we're searching for.