Question

FAN AND MEDAL

The scatterplot and trend line show a positive correlation between advertising costs and sales.
The slope was found using the points (6.4, 117) and (6.6, 120). What is the value of b in the equation of the trend line?
y = 15x + b

Answer 1

120=15×6.6+b
You can calculate b from here
So b=120-99=21

Answer 2

Yes

Answer 3

Thank you

Answer 4

Don't mention it

Answer 5

Could you help with this part of the question? I think that It goes with this one but I'm not sure.

Answer 6

Given the equation of a trend line, can you find the exact amount of sales given the advertising cost?

Answer 7

@Pawanyadav

Answer 8

I can't understand what are you asking exactly
You got the equation. y=15x+21
What after that?

Answer 9

Just put y=1000 and find x

Answer 10

How do I do that?

Answer 11

What is the first equation

Answer 12

y=15x+21

Answer 13

y = 15x + b

Answer 14

Is this question based on this equation
If yes than
Advertising cost is represented by x or y
If it is x put x=1000 in the equation
If it is y then put y=1000 in the equation and find the remaining one

Answer 15

It Is

Answer 16

Pls attach it

Answer 17

@Pawanyadav

Answer 18

Here

Answer 19

Oh x is representing adv. cost and its
1000
So y=15000+21=15021