Which equation below represents a horizontal line?
a) y = 4
b)y = x – 0
c)y = x + 0
d)x = 4

Asequence of numbers begins with 12 and progresses geometrically. each number is the previous number divided by 2. which value can be used as the common ratio in an explicit formula that represents the sequence? 1/2 2 6 12

Find the slope of a line given the following two points

What is the value of x when x + 7 = 21?