Question

Confused on how to do this picture attached

Answer 1

Did you find the slope?

Answer 2

No how would I?

Answer 3

I know that much but where do I get x and y from

Answer 4

From the table. The top row contains x values. The bottom row contains y values.
You should graph the ordered pairs and draw the line of best fit.

Answer 5

I graphed it and drew a best fit line now what?

Answer 6

y 2 - y 1 / x 2 - x 1

Answer 7

I get that but what points do I input

Answer 8

consider two points.. just take any 2 points.. and use that y2-y1 equation

Answer 9

for example use 1990 and 1950

Answer 10

somethings not right here, isn't time supposed to be on x-axis?

Answer 11

Lol yes it is sorry

Answer 12

to find the slope, for example, draw a line from 1990, to a point on the line looks about 95000 to me.. Then draw a line from 1950 to a point on the line as well..looks about 35000 to me

then divide \[\frac{ 95000-35000 }{ 1990-1950 }\]

Answer 13

1500?

Answer 14

looks right.. :)

Answer 15

I'm still confuse on how I get the answer after finding the slope

Answer 16

i'll see to it, sorry

Answer 17

for these trend line problems ,its best to use the end points to estimate slope
\[slope = \frac{113,100-23,800}{2000-1940} = 1488.33\]
for part b)
plug in (2040 -1940 = 100) for "x"
\[y = 1488.33*100 + 23800\]

Answer 18

Thanks so much!