Distance on a Graph
Ok, so in my class we are doing about distances on a graph. I have a question asking which point is closer to (0,0):
So I did this. I first went to work out (0,0) and (3,2).
I know you have to subtract the X co ordinates to find the distance from them and then the same for Y co ordinates.
0-3=-3 (then square) -3^2=9
0-2=-2 (then square) -2^2=4 (plus answers together) = 13 = (sqrt)13
Now my homework paper says not to use a calculator so I assume im suppose to leave it here or just say its roughly 4?
Did I calculate this right?
When you have a square root. Square both of them and which is bigger was the number bigger initially.
Originally Posted by Yppolitia
What is larger sqrt(5) or 3sqrt(2)
Square each one,
5 and 9*2=18
We conclude that,