Home
Class 10
MATHS
{:(3x - y - 2 - 0),(2x + y - 8 = 0):}...

`{:(3x - y - 2 - 0),(2x + y - 8 = 0):}`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the system of equations given by: 1. \( 3x - y - 2 = 0 \) (Equation 1) 2. \( 2x + y - 8 = 0 \) (Equation 2) we will follow these steps: ### Step 1: Rearranging the equations We can rearrange both equations to express \( y \) in terms of \( x \). From Equation 1: \[ 3x - y - 2 = 0 \implies y = 3x - 2 \] From Equation 2: \[ 2x + y - 8 = 0 \implies y = 8 - 2x \] ### Step 2: Setting the equations equal to each other Now, we can set the two expressions for \( y \) equal to each other: \[ 3x - 2 = 8 - 2x \] ### Step 3: Solving for \( x \) Now, we will solve for \( x \): \[ 3x + 2x = 8 + 2 \] \[ 5x = 10 \] \[ x = \frac{10}{5} = 2 \] ### Step 4: Substituting \( x \) back to find \( y \) Now that we have \( x = 2 \), we can substitute this value back into one of the original equations to find \( y \). We'll use Equation 1: \[ y = 3(2) - 2 \] \[ y = 6 - 2 = 4 \] ### Final Solution Thus, the solution to the system of equations is: \[ x = 2, \quad y = 4 \] ---
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • LINEAR EQUATIONS IN TWO VARIABLES

    NAGEEN PRAKASHAN ENGLISH|Exercise Exercise 3A|8 Videos
  • LINEAR EQUATIONS IN TWO VARIABLES

    NAGEEN PRAKASHAN ENGLISH|Exercise Exercise 3b|30 Videos
  • LINEAR EQUATIONS IN TWO VARIABLES

    NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise Long Answer Questions|8 Videos
  • INTRODUCTION TO TRIGONOMETRY

    NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise Long Answer Questions|5 Videos
  • POLYNOMIALS

    NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise Long Answer Questions|4 Videos

Similar Questions

Explore conceptually related problems

Solve: {:(3x - 4y - 1 = 0),(2x - (8)/(3)y + 5 = 0):}

The orthocentre of the triangle formed by the lines x - 7y + 6 = 0, 2x - 5y - 6 = 0 and 7x + y - 8 = 0 is

Regression equation of y on x and y be x + 2y - 5 = 0 and 2x + 3y - 8 = 0 respectively and the variance of x is 12. find the variance of y.

Show that the three straight lines 2x-3y + 5 = 0 , 3x + 4y - 7 = 0 and 9x- 5y + 8 = 0 meet in a point

The locus of the mid-point of a chord of the circle x^2 + y^2 -2x - 2y - 23=0 , of length 8 units is : (A) x^2 + y^2 - x - y + 1 =0 (B) x^2 + y^2 - 2x - 2y - 7 = 0 (C) x^2 + y^2 - 2x - 2y + 1 = 0 (D) x^2 + y^2 + 2x + 2y + 5 = 0

Show that the lines 2x + 3y - 8 = 0 , x - 5y + 9 = 0 and 3x + 4y - 11 = 0 are concurrent.

The equation of the circle passing through the point of intersection of the circles x^2 + y^2 - 6x + 2y + 4 = 0 and x^2 + y^2 + 2x - 6y - 6=0 and having its centre on y=0 is : (A) 2x^2 + 2y^2 + 8x + 3 = 0 (B) 2x^2 + 2y^2 - 8x - 3 = 0 (C) 2x^2 + 2y^2 - 8x + 3 = 0 (D) none of these

The equation of the circle passing through (1/2, -1) and having pair of straight lines x^2 - y^2 + 3x + y + 2 = 0 as its two diameters is : (A) 4x^2 + 4y^2 + 12x - 4y - 15 = 0 (B) 4x^2 + 4y^2 + 15x + 4y - 12 = 0 (C) 4x^2 + 4y^2 - 4x + 8y + 5 = 0 (D) none of these

{:(0.4x + 0.3y = 1.7),(0.7x - 0.2y = 0.8):}

{:((x)/(2) + y = 0.8),((7)/(x + (y)/(2)) = 10):}