Hello I need help with this question

Rhombus

Step-by-step explanation:

Apply the formula for finding distance using coordinates to find the length of the sides of the parallelogram

Given the coordinates as;

P(6,-6) , Q(1,1),R(-6,6),S(-1,-1)

Finding the lengths

The formula to apply is;

For PQ  where you have : P(6,-6) , Q(1,1)

You can also apply the Pythagorean relationship to get the leg distance and calculate the hypotenuse .For example to get the length of QR ;

QR² = 7²+5²

QR = √49+25

QR = 8.60

You notice all sides are equal , 8.60 units

You also notice the opposite angles are equal

This is a rhombus

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

10 - 8 = -2

  8 - 6 = -2

etc, so -2 is the common difference

step-by-step explanation: