Which term refers to slope? (a-rate of change) (b-equation) (c-y-intercept) (d-coordinate)

Y intercept and coordinate are both fixed points, so intuitively we can rule those out since a slope is a measurement of change across at least 2 points.

The equation includes the slope so that could be correct unless there is a more specific/correct answer. As mentioned above, the slope is a measurement of change so that should be pretty clear. Hope this helps