Question

OK well today I learned about the "constant of proportionality" (7th grade math). We use the equation y=kx. k= constant of proportionality. I had homework problems on that, had the same equation where we substituted with a scenario. I dont understand what k represents. Could u help by giving an ex problem (solved) so i can look at it and see how to complete it. Also could u write what k represents? Thank a ton guys

Answer 1

k is essentially an arbritary constant defining y/x. This is because y/x = k. In other words, y is in direct proportion to x, such that y/x = k. Thus, given k, you can find values of y and x that satisfy, or given y and k, you can find x.

Answer 2

what?

Answer 3

ok so, k is just a number. doesn'r really matter unless it is SPECIFICALLY ddefined by the problem. for example, if i'm given, find 2 values of y and x that satisfy y=kx and k=6, those variables y and x could be 36 and 6, or 6 and 1, because 36/6 = 6 and 6/1 = 6.

Answer 4

could u give a word problem then help "define" k
@Rizags

Answer 5

Ok here,
For a given spring, F has a value of 35 when the spring has
stretched 8 inches. What is the constant of proportionality for
that spring?
so F=kx in this scenario
when F=35, x=8
therefore, 35 = k(8), so k=35/8

Answer 6

k represents what?

Answer 7

and whats x?

Answer 8

the constant of force (proportionality) in the given problem. its a Constant, so as x and y vary, K stays the same.

Answer 9

this is kind of a physics application tho

Answer 10

i meant what does k represent like as in is it for a given problem "a gallon of gas cost"

Answer 11

so, in a gas price problem, if y= the total price of gas, and x= the gallons u put, then K is the constant= gas price

Answer 12

K ALLLLWAYS stays the same

Answer 13

ok thanks..

Answer 14

medal rl quik plz lol