6
The answer is - not are - (-6, 9).
4
x+y = 3 + 2x-y= 6 = 3x=9 x=3 :- 3+y=3 y=3-3 y=0 s.s = x=3, y=0
x = 0 & y = -3
6
3
No but y = -1/2x+3 is perpendicular to y = 2x+6
When x = 3, y = 3*32 - 2*3 = 27 - 6 = 21
The answer is - not are - (-6, 9).
y=x y=6-x Set the two equations equal to each other to yield a solution: x=6-x 2x=6 x=3 x=3 will satisfy both equations, that is plugging in x=3 will give the same value for y y=(3)=3 y=6-(3)=3
6
4
x+y = 3 + 2x-y= 6 = 3x=9 x=3 :- 3+y=3 y=3-3 y=0 s.s = x=3, y=0
-6
9
y = 6 x 3.5; If you can't do that in your head, split it up: 6 x 3 = 18, 6 x .5 = 3, 18 + 3 = 21