Please help me find the slope and the y-intercept of these two tables. And please tell me if they are proportional or not and if they are negative or not. THX!

If n stands for number sold and c stands for cost per item, in which column would you use the formula: ? a. column d c. column f b. column e d. column g

What is the reflection image of (5,-3) across the line y = -x?

Plz. yesterday, the snow was 2 feet deep in front of archie’s house. today, the snow depth dropped to 1.6 feet because the day is so warm. what is the percent change in the depth of the snow?