Question

8TH GRADE ALGEBRA/GRAPH HELP PLZ!
Medal+Fan, please help
A student wrote the equation of this line as y=1/5x. What mistake did she make? (Look at attached image)

Answer 1

@iGreen @phi @mathstudent55

Answer 2

y = 1/5x
not -1/5x
so for x =5. y should be 1, not -1

Answer 3

Sorry, what?

Answer 4

Okay, the student wrote the slope as increasing.

Answer 5

However, the line is decreasing.

Answer 6

So, the line is y=-1/5x.

Answer 7

Here may be a better source (Yes, it is Wikipedia, but it works.) http://en.wikipedia.org/wiki/Slope

Answer 8

Ohhh, so she didn't put the negative sign basically.

Answer 9

Pretty much, yes.

Answer 10

That makes a lot of sense, thanks soo much!!!!!

Answer 11

No problem. Have a nice day!

Answer 12

:)