XYZ is reflected over the y-axis. What algebraic representation explains the effect of the transformation?
A (x, y) - (-X, -y)
B (x, y) = (x, -y)
c (x, y) → (-y, x)
D (x, y) - (-x, y)

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?