Question

Solve the following simultaneous equations graphically 3x = y + 2 : y = 8 - 2x​

Answer 1

Answer:

The given simultaneous equations are  3x – y – 2 = 0  ∴ y = 3x – 2 x 0 1 3 -1 y -2 1 7 -5 (x,y) (0,-2) (1,1) (3,7) (-1,-5) 2x + y = 8 ∴  y = 8 - 2x x 0 4 1 3 y 8 0 6 2 (x,y) (0,8) (4,0) (1,6) (3,2) Read more on Sarthaks.com - https://www.sarthaks.com/842549/solve-the-following-simultaneous-equations-graphically-i-3x-y-2-0-2x-y-8-ii-3x-y-10-x-y-2

Answer 2

Answer:

X=2

Y=4

Explanation:

To Given

3X= Y+2 --------- (1)

Y= 8-2X---------(2)

Apply to Y=8-2X in equation (1)

3X= 8-2X+2

3X+2X=10

5X=10

X=10/5

X=2

Substitute X=2 in equation (2)

Y= 8-2(2)

Y= 8-4

Y= 4