Answer:
f(-20) = -6
f(4) = -6
f(16) = 6
f(0) = -3
Explanation:
The x-axis is the horizontal line going from left to right. The y-axis is the vertical line going from down to up. Each line is labeled with x and y values. f(x) = y. f(-20) = "y when x is -20".
When x is -20, y is -6
When x is 4, y is -6
When x is 16, y is 6
When x is 0, y is -3