Question

Pls answer all the questions ...​

Answer 1

4) option c

That is ,(X+Y=7)

5) option b

That is,(X+Y=0)

6) option a

That is, (1st Quadrant)

7) option c

That is,(3,0)

Answer 2

Step-by-step explanation:

(4) x = 5 and y = 2 is a solution of x + y = 7

if put x in x + y = 7

5 + y = 7

then , y = 2

(5) x + y = 0 has a solution(-2,2),(0,0),(2,-2)

put x = -2 and y = 2

-2 + 2 = 0

0 = 0

put x = 0 and y = 0

0 + 0 = 0

0 = 0

put x = 2 and y = -2

2 + (-2) = 0

0 = 0

(6) positive solution of ax + by = 0 always lie in 1st quadrant

(7) (3,0) is meet the x-axis

put y = 0 in 2x + 3y = 6

2x + 3(0) = 6

2x + 0 = 6

x = 6/2

x = 3