Are the lines 12x + 3y=-9 and -8x – 2y = 14 parallel?

they are parallel

Step-by-step explanation:

slope of both line come 4

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

the 2 figures are congruent bc if you reflect abcd over the y axis then over the d axis the figures overlap