Question

Which number line represents the solutions to 1-2x = 4?

Answer 1

The third choice down

Explanation:

|-2x| = 4

There are two solutions, one positive and one negative

-2x = 4 and -2x = -4

Divide by -2

-2x/-2 = 4/-2 -2x/-2 = -4/-2

x = -2 and x = 2