The coordinate of A is -5x. The coordinate of Z is 4+x. AZ=16. Find the value of x and the coordinate(s) of A.
I tried out the problem, and found out that x=2.
I can't figure out the coordinates of A though :/.
My teacher told us to use absolute value, but I don't know how...
2006-10-25 13:25:41 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
A = -5x, so A = -5(2) = -10
2006-10-25 13:31:24 · answer #1 · answered by Puzzling 7 · 0⤊ 1⤋
Since "The coordinate of A is -5x", your answer of
x = 2
means that the coordinate of A is -10.
What I find puzzling is that you're then asked for "coordinates" as if we are using the (x, y) plane, but the information given only allows us to find one coordinate.
If your teacher told you to use absolute value, it must mean that AZ can be in either the positive or the negative direction. So you solve
absolute value of (4 + x -(-5x)) = 16
i.e. 4 + 6x = 16 or -16
Then that second equation
4 + 6x = -16
gives you the other possible value of x and hence the other possible coordinate of A
2006-10-25 20:36:34 · answer #2 · answered by Hy 7 · 0⤊ 0⤋