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7. The distance between two points is 5. One of them is (3, 2) and the ordinate of thesecond is-1 then its x coordinates are1) 7, 12)-7, 13)-7, -14) 7, 1 |
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Answer» The distance between two points is 5 units. One of the points is (3, 2). The other point has coordinates (x, -1). Use the distance formula to find all possible values of x.d^2 = diffx^2 + diffy^225 = (x-3)^2 + 9x^2 - 6x + 9 + 9 = 25x^2 - 6x - 7 = 0(x-7)*(x+1) = 0x = 7x = -1 |
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