Question

What function equation is represented by the graph?

f(x)=−x−2

f(x)=−12x−1

f(x)=−2x−12

f(x)=−2x−1

Answer 1

f(x)=−2x−1

Explanation:

Answer 2

The slope (m) of the line graphed is -4/2, because the line goes down 4 (-4) and over 2 (+2), which is change in y over change in x
m = -4/2 = -2
the y-intercept (b) of the line = -1, because the line crosses the vertical line at x=0 at y=-1
now for the equation:
y = mx + b
y = -2x + -1 = -2x - 1
f(x) = -2x-1
the last answer is correct