Which of the following is the value of a when the function f(x) = 31xlis written in the standard form of an absolute value function?
-1
-3
1
3

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

where is the page?

step-by-step explanation:

ddsf

step-by-step explanation:

dfs