Answer:
-18+9k
Step-by-step explanation:
If you use the distributive property, you get:
(-3*6) and (-3*-3k)
If you simplify each of them you get:
-18+9k
Normally you would only solve by completing the square if a is 1 and b is even. But the answer would be half of b. So half of 9 is 4.5 or 4(1/2).
The slope is either 5/2 or 2/5 and the y intercept is 3
the second one 6,6,6 it is a square all the others seem like a triangle
I need the picture in order to see what angle x is :)