Krin buys 3 headbands and 2 wristbands. His brother Clay buys 4 headbands and 1 wristband. What is the total cost?

An algebraic expression to represent this would be

Step-by-step explanation:

3h + 2w + 4h + 1w = total cost

Or! (Possibly more correct)

7h + 3w = c

h = cost of headbands

w = cost of wristbands

c = total cost

The slope is -4. To find the slope you use the formula rise/run. Since the slope is negative the rise will be counted as a fall. This will lead to -4/1 which equals your slope -4.