I need help anyone pls

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000