Crystal spent $1000 on a car to get back and fourth to school, this was x dollars less than 10 times what she spent on her books for college, how much did she spend on her books?

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.

i can't solve unless i know what the line is

step-by-step explanation:

welcome to/p>

i hope this is what you were looking for.

see attached graph