4schools sent students to a language corse.
one of the schools sent both french and german students.
the ratio of french to german students was 1: 3.
the school sent 21 german students
the other 3 schools sent the same number of students .
work out the total number of students sent to the language corse

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

in if you ask questions, the points are taken from your total and given to the one who answered it..

so if i have 30 points and i ask a question for 5 points, then when someone asks a question i will lose 5 points and the answerer earns 5

happy to