Ambrose Has Indifference Curves with the Equation X₂ = Constant

Multiple Choice

Ambrose has indifference curves with the equation x₂ = constant - 4x^1/2₁, where larger constants correspond to higher indifference curves.If good 1 is drawn on the horizontal axis and good 2 on the vertical axis, what is the slope of Ambrose's indifference curve when his consumption bundle is (9, 19) ?

A) -9/19
B) -19/9
C) -0.67
D) -22
E) -3