Which of the following always creates lines that are both congruent and parallel between corresponding coordinates from the preimage to the image in a figure? 1. reflection over the line y-axis

2. translation up 4

3. rotation 180 degrees

4. dilation by a factor of 3

How can you tell when x and y are not directly proportional?

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.