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.
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
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.
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,
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