Question

answer attempt 1 out of 5
the graph above is a 　. its domain can best be described as a subset of the 　. for every unit that $x$ increases, the $y$-value grows or declines by repeated 　. as a result, the graph can best be said to represent 　.

Explanation:

Answer:

half-line (ray)
real numbers
addition or subtraction (a constant amount)
a linear function with a negative slope