hey mates please help me and doooo allll questions
Answers
Q.8 in 4th quadrant it will lie
Answer:
hey
8. (-2,5) lie in 2nd quadrant.
+,+ in 1st quadrant.
-,+ in 2nd quadrant.
-,- in 3rd quadrant.
+,- in 4th quadrant.
10. (3,5) 1st quadrant.
(4,6) 1st quadrant.
(-4,0) 2nd quadrant.
(-2,3) 2nd quadrant.
(-1,-3) 3rd quadrant.
(0,0) in centre.
11. i) 3=2x+y
y=2x-3
let x be 1
y=2(1)-3
=2-3
=(-1)
let x be 2
y=2(2)-3
=4-3
=1
let x be (-3)
y=2(-3)-3
=(-6)-3
=(-9)
ii) 15x-2y=7
2y=7-15x
y=(7-15x)÷2
let x be 1
y=[7-15(1)]÷2
=(-8)÷2
=(-4)
let x be 2
y=[7-15(2)]÷2
=(7-30)÷2
=23÷2
=11.5
let x be (-3)
y=[7-15(-3)]÷2
=[7-(-45)]÷2
=(7+45)÷2
=52÷2
=26
I hope it is helpful