Which of the following equations has a solution of −1/2 ?

Answer 1

To find the equation with a solution of -1/2, we can substitute -1/2 into each equation and see which one satisfies the equation.

a) 2x - 1 = -1/2
If we substitute x = -1/2 into this equation, we get:
2(-1/2) - 1 = -1/2
-1 - 1 = -1/2
-2 ≠ -1/2

b) x^2 - 3x + 2 = -1/2
If we substitute x = -1/2 into this equation, we get:
(-1/2)^2 - 3(-1/2) + 2 = -1/2
1/4 + 3/2 + 2 = -1/2
7/4 ≠ -1/2

c) 3x + 1/2 = -1/2
If we substitute x = -1/2 into this equation, we get:
3(-1/2) + 1/2 = -1/2
-3/2 + 1/2 = -1/2
-2/2 ≠ -1/2

d) 4x - 8 = -1/2
If we substitute x = -1/2 into this equation, we get:
4(-1/2) - 8 = -1/2
-2 - 8 = -1/2
-10 ≠ -1/2

Therefore, none of the given equations has a solution of -1/2.