Are the graphs of y = -5x + 9 and 5x + y = -21 parallel, perpendicular, or neither? Explain. I need some help please

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Which one is true about the hexagons ?

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.