Question

If K = {(x, y ) | x - y = 5}, is Set K a function?



Yes

No

Answer 1

what do you think

Answer 2

I have absolutely no idea.

Answer 3

http://www.purplemath.com/modules/sqrcircle.htm this help me out when i was doing these types of questions

Answer 4

Basically it asking you if the linear equation x-y=5 passes the vertical line test

Answer 5

I don't know! Lol

Answer 6

do you know what x-y=5 looks like?

Answer 7

No

Answer 8

do you know y=mx+b is a linear equation with y-intercept b and slope m?

Answer 9

I haven't done slope in 2 years

Answer 10

x-y=5
-y=-x+5 (subtracted x on both sides)
y=x-5 (multiplied -1 on both sides)

y=x-5 is a line with slope 1 and y intercept -5

Answer 11

can you draw this now?

Answer 12

this is what that line looks like
does it pass the vertical line test?