Question

7. What is the solution of
equation 8x+3y=5 and 3x-2y=5
?
Α. (1,1)
Β. (-1,-1)
C. (-1,1)
D. (1,-1)​

Answer 1

Step-by-step explanation:

As we have two equation of lines , the intersecting point of them is the solution .

so,

2(8x+3y=5)

+3(3x-2y=5)

---------------------------

16x+6y= 10

+9x-6y = 15

---------------------------

25x = 25

x = 25/25 = 1

then by substituting x in any equation

you may get y as -1 .

hence (X,Y) => (1,-1). (D)