8th garde math

Kathy Asked:

Determine wich order pair(s) is a solution to the ...

Determine wich order pair(s) is a solution to the inequality.

1. y < x - 1 A. (2, -3) B.(-1, -2) C. (4, -1) D(0, -2)

please explain what I am suppose to do, so I can show my son.

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3 Answers

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Dara Answered:

y<x-1 plug in the numbers from the (x,y).....< means less than.....>means greater than

-2<0-1 or -3<2-1

draw a number line, plot -2 and -1 or -3 and 1 to prove

Posted 4 years ago

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Ol' Yeddar Answered:

Try this. Graph the line x = y+1

If the ordered pair is above this line, meaning x > y+1, then it satisfies the solution.

You can draw the line here http://www.ronblond.com/M10/lineAP. The slope m = 1. Do you have a 45 degree line running from bottom left to top right that crosses the y axis at -1. Anything above this line is the solution.

Jay

Posted 4 years ago

Keep close to Nature's heart... climb a mountain or spend a week in the woods. Wash your spirit clean.* Victims of circumstance owe it to fate. Victims of choice owe it to themselves.*One of the widest gaps in human experience is the gap between what we say we want to be and our willingness to discipline ourselves to get there.

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OronD Answered:

Hi,
2 ways to do it:
1. Simply check:
     Is -3<2-1 ? Yes -3 < 1 so (2, -3)
     answers.
     Is -2 < -1-1 ? No only equals so (-1, -2)
     does NOT.    D(0, -2)
     Is -1 < 4-1   ? - Yes -1 < 3 so (4, -1)
     answers.
     Is -2 < -2-1 NO -2 is bigger than -3 so
     it doesn't answer.
2. Draw a line y=x-1 Passing through
     (0, -1) (1,0) any y above the line copes
     with that requirement.
Best regards,