Answer:
only C is a function cause a function has only 1 same value.


Both points are on the graph.
Answer:
see below
Step-by-step explanation:
From the graph the slope is -1 and the y-intercept is 9. Therefore we can use slope-intercept form (y = mx + b) which will be y = -x + 9.
3120 times 4 which is 12,480 which is close to 1200 so c is ur answer