Please help, I'm not sure if I'm right.

To prove the QRST is a parallelogram.

Step 1: Given and

Step 2: are alternate interior angles.

Definition of alternate interior angles

Step 3: Alternate interior angle theorem:

If two parallel lines cut by a transversal then the alternate interior angles are congruence.

QR and TS are parallel lines cut by QS.

Therefore,

Step 4: Reflexive property of congruence:

Any geometric figure is congruence to itself.

Therefore,

Step 5: By the above steps

(Angle), (Angle) and (Side)

Hence (by ASA congruence theorem)

Step 6: Corresponding parts of congruence triangles are congruent.

Step 7: Property of parallelogram:

If one pair of opposite sides are both parallel and congruent, then the quadrilateral is a parallelogram.

Hence Quadrilateral QRST is a parallelogram.

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)