Hi,
how do i choose which is the equation for this graph ?
here i have uploaded the graph .
http://img209.imageshack.us/my.php?image=scan0035kr0.jpg
can you please tell , whats the approach to solve this kind of problem ?
2007-05-25 20:42:19 · 5 answers · asked by sanko 1 in Science & Mathematics ➔ Mathematics
Plug in the given values at the key points into each equation and see which one fits them all.
2007-05-25 20:49:59 · answer #1 · answered by gp4rts 7 · 0⤊ 1⤋
1 is the answer.
Anything that has > sign is eliminated, since (0,0) is in the reuired region. To chose between 1 or 2, look at the x or y intercepts.
We know when x=0, y should be 1 and that is satisfied by 1.
2007-05-26 04:18:48 · answer #2 · answered by Anonymous · 1⤊ 0⤋
Answer is (1)
It is the equation of the shaded area.
Answer cannot be (3) or (4) because point (0,0) which is inside the area does not satisfy those equations. It cannot be (2) because points (-2,0) and (2,0) on the x-axis do not satisfy that equation.
2007-05-26 03:50:46 · answer #3 · answered by CC 2 · 0⤊ 0⤋
ans. is (1).see 1st cancel option (3) & (4) because you need enclosed area towards origin i.e <= sign.now find one of the eq. of line by the 2pt. form i.e y-y1=y2-y1/(x2-x1) * (x-x1)
you will get coff. of y as 2 therefore ans. is option (1)
2007-05-26 03:57:00 · answer #4 · answered by SS 2 · 0⤊ 0⤋
No prob...
Try some points; (0,0) rules out (3) and (4),
and (2,0) rules out (2).
Good luck!
2007-05-26 04:35:33 · answer #5 · answered by Anonymous · 0⤊ 0⤋