Question

A graph titled Monthly Sales and Advertising Costs has Advertising Costs (1,000 dollars) on the x-axis and sales (1,000 dollars) on the y-axis. A line goes through points (6.4, 117) and (6.6, 120).
The scatterplot and trend line show a positive correlation between advertising costs and sales.
Using the points (6.4, 117) and (6.6, 120), what is the slope of the trend line?
–15
–12
12
15

Answer 1

AnswBrainly User

When x = 6.4, y=117, therefore

15*6.4 + b = 117

b = 117 -  96 = 21

Confirm this value by checking (6.6, 120).

15*6.6 + 21 = 120 (Correct)

Answer: b = 21

Step-by-step explanation:

Answer 2

Answer:

The real answer is 15.

Step-by-step explanation:

The kid above me thought they were smart using the old copy and paste method, and they did it from a completely different question. As you can tell, 21 isn't even an option, so 15 is the answer.