Question

Devon made the scatter plot to track his bank balance over time.

What is the equation of the graphed linear model?

y = x +

http://static.k12.com/calms_media/media/1549000_1549500/1549113/1/ab694ddd1f04d55c25077d014a1e7eeb0dc4774a/MS_IMC-141014-181217.jpg

Answer 1

@dagrothus

Answer 2

@dagrothus plz help

Answer 3

@amorfide @1289florida

Answer 4

@texaschic101 @Legends

Answer 5

You have to find the y-intercept, or where the line touches the y-axis, which is at 250.

Answer 6

This is the same as the last one. Use y=mx+b where b is the y intercept and m is the slope, rise/run

Answer 7

so y=250x+?

Answer 8

No, slope intercept form is y=mx+b, where m is the slope, and b is the y-intercept. It would be y=mx+250..... but you still have to find the slope to plug in for m

Answer 9

To find the slope, plug in two points from the line into the slope formula y2-y1/x2-x1

Answer 10

ok

Answer 11

4?

Answer 12

no, look at the change in y over the change in x at any 2 points. the line moves 3 boxes down and 2 boxes to the right. Each box in the x direction represents 1 unit. Each box in the y direction represents 10 units. So it moves 30 units down and 2 units right.\[\Delta y = -30\]
\[\Delta x = 2\]
-30/2 = -15
so the slope is -15

Answer 13

ok. so y=-15x+250?