75% of a number Decrease x by 25%

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Axel follows these steps to divide 40 by 9: start with 40. 1. divide by 9 and write down the remainder. 2. write a zero after the remainder. 3. repeat steps 1 and 2 until you have a remainder of zero. examine his work, and then complete the statements below.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)