This system of linear inequalities can be used to find the possible heights, in inches, of darius, d, and his brother william, w. d ≥ 36 w < 68 d ≤ 4 + 2w

Darius is at least 36 inches tall.  

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Darius is at most 36 inches tall.

William’s height is less than 68 inches.  

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William’s height is at least 68 inches.

Darius is less than 4 inches taller than twice William’s height.

Darius is no more than 4 inches taller than twice William’s height.  

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Step-by-step explanation:

x

step-by-step explanation:

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)