Concept:Find the equation of the boundary line first, then use the shaded side to choose the correct inequality sign.Explanation:The line passes through (0,4) and (1,0).Its gradient is m=1−00−4=−4.Since the y-intercept is 4, the equation is y=−4x+4.The shaded portion is below the line, so the inequality is y≤−4x+4.Answer:y≤−4x+4This is option C.
