Question

For the equations with variables x and y, if Dx = 26, Dy = –39 and D = 13 then x = ?

Options

• 2

• –3

• –2

• 3

Answer 1

2

Explanation:

Dx = 26, Dy = –39 and D = 13

Using Cramer’s rule,

`x = (D_x)/x`

`x = 26/13`

x = 2