kc72 kc72
  • 19-06-2016
  • Mathematics
contestada

Y varies directly as x. If y =-5 when X= 15, find x when y =3

Respuesta :

hartnn
hartnn hartnn
  • 19-06-2016
y varies directly as x,
then y = kx

when y = -5, x =15
so,
-5 = k*15
k = -5/15 = -1/3

so, y = -x/3

when y = 3,
3 = -x/3
x= -3*3
x= -9.
Answer Link

Otras preguntas

omg I will Be Marking A Brainlist
Answer question below plz show work (only if you show work I will give brainliest) (2x)^2 -x+1 When x= -2
Select the correct answer. Read this excerpt from Abraham Lincoln's Emancipation Proclamation. What inference, or conclusion, can you draw from this passage? I
Ms. Sanchez’s guests drank 5 3/4 gallons of pink lemonade in 1/4 hour. What was the average rate in gallons per hour which her guests drank the pink lemonade
This is more out of curiosity than for an assignment. Plus, I like getting your guys opinions! Anyway, here’s my question...How did WW1 affect WW2?
Jane lives on a straight road that goes east and west. She starts from a point 6.3 miles west of her home and drives a certain distance to the store. The store
If Marin walks 28 m north and 19 m east, what is the magnitude of her displacement from the starting point?
hypertension is a major risk factor for heart disease because it quizlet
(9x+3)5 i really need help with this pleaseeee
court fee for a tennis court starts from 9pm-5pm 3.50 per hour after 5pm 7 dollars per hour shenice and her friends reserve a tennis court from 3pm to 8pm what