## anonymous one year ago What is the distance between points P(1, 7) and Q(9, -8)?

1. arindameducationusc

IS THE ANSWER 17... i can explain why

2. arindameducationusc
3. anonymous

Use the distance formula $\large \bf d=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}$

4. anonymous

$\sqrt{(x _{2}-x _{1})^{2}+(y _{2}-y _{1})^{2}}$

5. AakashSudhakar

To find the distance between any two points, you have to manipulate the distance formula, which is given as follows: $d=\sqrt{(y_{2} - y_{1})^2 + (x_{2} - x_{1})^2}$ For this situation, x2 and y2 would correlate to one set of points while x1 and y1 correlate to another. Be sure to use the same coordinate point for x1 and y1 and the other one for x2 and y2!

6. anonymous

It's another way of writing Pythagoras theorem.

7. anonymous

am I doing something wrong? I keep getting the wrong answer. but im plugging the numbers into the formula

8. AakashSudhakar

Talk us through, what are you getting as your numbers?

9. anonymous

What does the formula look like for you when you plug them in?

10. anonymous

d=$\sqrt{(1-10)^{2}}+\sqrt({1-7})$except its a continued square root and the 1-7 equation is also squared