cramers rule

Evaluate the determinant of the matrix.

The directrix is

• a line outside the parabola

• a point outside the parabola

• a line inside the parabola

• a point inside the parabola

If the matrices can be multiplied, what dimension is the product? If not, write undefined.

• ( 2 x 2 )

• ( 6 x 2)

• ( 2 x 6 ) )

• ( 3 x 2 )

• A
• B
• C
• D

• 
• 
• 
• 

What is Dy/D?

• $\frac{-29}{-29}$

• $\frac{-116}{-29}$

• $\frac{29}{-29}$

• $-4$

On your paper, setup using Cramer's rule. Solve for a.

• 2

• -2

• -3

• 3

On your paper show the setup for solving using Cramer's rule. Solve system by using Cramer's Rule. Answers are written in the following form (x,y)

 $-4x+7y=10$  
 $x-3y=-10$  

•  $\left(8,\ 10\right)$  

•  $\left(8,-10\right)$  

•  $\left(10,-8\right)$  

•  $\left(-10,8\right)$  

What size is this matrix?

• 2x2

• 2x3

• 3x2

• 1x6

• A
• B
• C
• D