How would you write an equation with a slope of 2/3 and a y intercept of -3

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

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

What is the range? can’t seem to find it out