The table below shows values for a function

x y
1 4
2 9
3 16
4 25

which equation represents the function?
a y=x^2
by= x^2+1
cy= (x-1)^2
dy=(x+1)^2

the answer is d

plug in the x into each equation

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