Ahalf of a class and a half of a student got a on a test. if yet another student got an a, then two-thirds of the class would have an a for the test! how many students are there in that class?

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