Wolfie215 Wolfie215
  • 25-02-2019
  • Mathematics
contestada

if y varies directly with X and Y equals 35 when x equals 5 find X when y equals -7​

Respuesta :

KhaRNate
KhaRNate KhaRNate
  • 25-02-2019

y varies directly with x means y = kx, where k is the constant value. To find x when y = -7 first we have to find k, using y = 35 and x = 5

y = kx

35 = k(5)

35/5 = k

k = 7

Find x when y = -7. Remember k is constant and it stays 7.

y = 7x

-7 = 7x

-7/7 = x

x = -1

Answer: x = -1 when y = -7

Answer Link

Otras preguntas

What is a major city in Alaska that starts with F
What is the difference between preterite and imperfect and the past progressive and present progressive?
How do you tell if an equation is linear or not????
Pyrenees mountains border Spain and this European country starts with F
Which statement illustrates the distributive property? Please help
Which statement illustrates the distributive property? Please help
Which statement illustrates the distributive property? Please help
Water on each side of a divide flows in...
How do you think the world was created?
What is a major city in Alaska that starts with F