Removing data points that are out of a specific boundary

If I have a matrix of xy coordinates A where A is something like

A= [1 2 
    3 4 
    3 0  
    10 1
    3 11
    5 6
     . 
     . 
     . 
    x y ]

and I want to remove all data entry points where x>5, and y>4. How might I do that effectively without previous knowledge of the entries (i.e. x and y = 10*rand(n,1) or something)?

Answer 1

[Sara]

[i,~] = find(A(:,1) > 5 & A(:,2) < 4);
A(i,:) = []