Is (2, 2) a solution of the inequality y ≤ 3x - 5?
1 answer:
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Is (2,2) a solution of the inequality y≤3x-5?
Simply write the y-coordinate in lieu of y and write the x-coordinate in lieu of x:-
2≤3(2)-5
Multiply:-
2≤6-5
2≤1
2 <em>is </em>less than 1, but it's not equal to 1.
So the right option is:-
(2,2) would be a solution if the inequality was y<3x-5
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x=-13±√13²-4(3)(10) / 2(3)
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3x</span>²+14x+15=0
x=-14±√14²-4(3)(15) / 2(3)
x=-14±√196-180 /6
x=-14<span>±</span>√16 / 6
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x=-3
The formula to solve for x is:
So for 3x²+13x+10=0, plug in the data
x=-13±√13²-4(3)(10) / 2(3)
x=-13±√169-120 / 6
x=-13±√49 /6
x=-13<span>±7 / 6
x=-13+7/6
x=-6/6
x=-1
x=-13-7/ 6
x=-20/6 or 3.3repeating
3x</span>²+14x+15=0
x=-14±√14²-4(3)(15) / 2(3)
x=-14±√196-180 /6
x=-14<span>±</span>√16 / 6
x=-14+4/6
x=-10/6 or 1.6repeating
x=-14-4/6
x=-18/6
x=-3