This is substitution

y = -6x - 7

7x + y = -3

answer should look like (x, y)

How do you summarize data in a two-way frequency table?

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?