Y= -5x-9 (slope) I NEED HELP

-5 is the slope

Step-by-step explanation:

if there's a number in front of x, it's most likely the slope.

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.

answer: true

step-by-step explanation: