Question

6. Solve 2x + 3y + 8 = 0 and 4x + 5y + 14 = 0 by cross-multiplication method. 1. 2x + 3y + 8 = 0 + 4x + 5y + 14 = 0​

Answer 1

Step-by-step explanation:

Given, 2x+3y+8=0 ...(1)

4x+5y+14=0 ...(2)

multiply equation. (1) by 5 and equation (2) by 3 we get

10x+15y+40=0

12x+15y+42=0

−−−

___________________

−2x−2=0

[x=−1] from equation.(1) 3y=8−2x

y=

3

10

Hence using cross multiplication method intersection point of line 1 & 2 are(−1,

3

10

)