2. Write an example of a line that passes through \( (4,-1) \) and has an undefined slope.

Shade the feasible region for the following three inequalities 1. \( x \geq 1 \) 2. \( y \geq 2 \) 3. \( y \leq-3 x+11 \)

Resuelva el siguiente problema relacionado con planos en el espacio utilizando los conceptos teóricos correspondientes | A. Determine la ecuación normal del plano que contiene los puntos: \( P(2,1,-4), Q(-5,4,3) \) y \( R(-2,6,3) \).

6. If \( m \angle C A G=(a+20)^{\circ} \), and \( m \angle A C F=(2 a+10)^{\circ} \), find \( m \angle A C F \). A. \( 110^{\circ} \) B. \( 70^{\circ} \) C. \( 50^{\circ} \) D. \( 20^{\circ} \)

Complete parts a and b. a. If triangle \( A B C \) is similar to triangle \( D E F \) and \( \frac{A B}{D E}=\frac{1}{3} \), what is the ratio of the heights of the triangles? b. What is the ratio of the areas of the two triangles? a. The ratio of the height of triangle \( A B C \) to the height of triangle \( D E F \) is \( \frac{1}{8} \). (Type an integer or a simplified fraction.) b. The ratio of the area of traingle \( A B C \) to the area of triangle \( D E F \) is \( \frac{1}{64} \). (Type an integer or a simplified fraction.)

(6). Odredite geometrijski niz u kojem vrijedi: \( a_{1}+a_{2}=-6, a_{2}-a_{4}=\frac{8}{3} \)