For the function y = 2x, when it is less than or equal to 2, the value range of Y is y____ 1 or Y_____ .

For the function y = 2x, when it is less than or equal to 2, the value range of Y is y____ 1 or Y_____ .


When x is less than or equal to 2, the value range of Y is less than or equal to 4



Given the function y = 12x + 1, when y ≤ - 1, the value range of X is______ .


When y ≤ - 1, 12x + 1 ≤ - 1, the solution is x ≤ - 4, so the answer is: X ≤ - 4