Question

The cost of a length of fabric is proportional to the number of yards purchased. The graph shows this relationship.

What is the unit rate for cost per yard?

The graph shows cost, in dollars, on the y-axis and length of fabric, in yards, on the x-axis. The line goes through point (five, eighteen).
http://static.k12.com/calms_media/media/1557000_1557500/1557382/1/94c87acbab4862507cd650e33d1ce09e601604a0/MS_IMB-1401029-190411.jpg
$_/yd
I think the answer is 4

Answer 1

How did you get 4?

Answer 2

I looked at the line
found where it was for the one on the x axis and guessed...

Answer 3

but now I'm trying to do the math

Answer 4

After my math i got 3.714285

Answer 5

rounded i got 3.71

Answer 6

Show me the math you did

Answer 7

Okay..first you need to try to understand the graph and what the point (5,18) mean.
That point tells you that it costs $18 per 5 yards of fabric. To find what it costs for 1 yard, you need to divide by 5.