State the domain and range and determine if it's a function?
Domain:
Range:
Function?

Step-by-step explanation: Let's first write the coordinates of each point.

When finding the coordinates of a

given point, be very careful with your signs.

On the x-axis, left means negative and right means positive

and on the y-axis, down means negative and up means positive.

The points in this problem are (-1, -2), (4, -2), (1, 1), (2, 3).

The domain is the set of all x-coordinates.

So here, the domain or D = {-1, 4, 1, 2}.

The range is the set of all y-coordinates.

So here, the range is {-2, 1, 3}.

Notice that I only listed the 1 once.

We only need to mention it once in our range.

Finally, let's determine if it' a function.

If none of the x-coordinates repeat, it's a function.

Since none of them do repeat, it's a function.

answer with step-by-step explanation:

a. ∠j is supplementary to ∠k - true:

(opposite angles of a trapezoid are supplementary which means that they add up to 180 degrees)

b. kl is parallel to jm - true:

(opposite sides are parallel to each other in a trapezoid)

c. jk is perpendicular to kl - false:

(clearly, jk does not make a right angle with kl)

d. jk is parallel to lm - false:

(jk and lm are two lines opposite in direction to each other so they cannot be parallel)

e. ∠j is congruent to ∠m - true:

(the angles on each side of the base are congruent)

f. ∠j is congruent to ∠k - false:

(the angles on the same side but opposite side of the base are not congruent)