Saved Bookmarks
| 1. |
Find the values of y for which the distance between the points p(2,-3)andq(10,y) |
|
Answer» ong>Answer: Step-by-step explanation:hello. the formula to calculate the distance between two points (a,b) and (c,d) is given by dist d = √(a-c)² + (b-d)²
applying it for this ques we have d=10 units 10 = √(2 - 10)² + (-3-y)² squaring both SIDES 100 = (-8)² + (9 + y² + 6y) 100 = 64 +9 + y² + 6y y² + 6y - 27 = 0 y² + 9y - 3y - 27 = 0 y(y + 9) -3(y + 9) = 0 (y-3)(y+9) = 0 y=3 or y=-9
both values of y are possible UNLESS no other condition is SPECIFIED in the question.
hope it helps |
|