Q. 103.8( 12 Votes )

# Let Y varies dire

Answer :

Given:

y varies directly with x i.e. y is proportional to x.

⇒ y = kx, where k is some real number. ------------- (i)

Given y = 12 at x = 3

Putting x = 3 and y = 12 in eq. (i)

We have,

12 = 3k

⇒ k = = 4

Thus the given linear equation is **y = 4x**

At x = 5: y = 4 x 5 = 20.

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

Related Videos

Quiz | Testing Your Skills on Linear Equation in Two Variables36 mins

NCERT | Imp Qs on Linear equation in Two Variables43 mins

NCERT | Imp. Qs. on Linear Equations in Two Variables0 mins

Interactive session on Linear Equations in Two Variables30 mins

Goprep Genius Quiz on Linear Equations34 mins

Smart Revision | Linear Equations in Two Variables34 mins

NCERT | Linear Equations41 mins

Quiz | Important Questions on Linear Equations In Two Variables49 mins

Bonus Questions on Linear Equations in Two Variables48 mins

Champ Quiz | Linear Equation45 mins

Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Expertsview all courses

Dedicated counsellor for each student

24X7 Doubt Resolution

Daily Report Card

Detailed Performance Evaluation

RELATED QUESTIONS :

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

The area of the tRS Aggarwal & V Aggarwal - Mathematics

Write the equatioRD Sharma - Mathematics

The distance betwRD Sharma - Mathematics

Draw the graph ofRS Aggarwal & V Aggarwal - Mathematics