If the domain of a function that is reflected over the x-axis is (1, 5), (2, 1), (-1, -7), what is the range? A. (1, -5), (2, -1), (-1, 7)

B. (5, 1), (1, 2), (-7, -1)

C. (-5, -1), (-1, -2), (7, 1)

D. (-1, 5), (-2, 1), (1, -7)

A. (1, -5), (2, -1), (-1, 7)

Step-by-step explanation:

Reflecting a function over the x-axis:

When a function is reflected over the x-axis, the x-value stays the same, while y changes the signal, so the transformation rule is:

To find the range:

We apply the transformation to the points in the domain. Thus:

Thus the correct answer is given by option a.

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12