Concept:The x‑intercept is the point where the line crosses the x‑axis. At this point, y=0.Explanation:Start with the equation: 3x+4y=12.Set y=0 because at the x‑intercept the y‑coordinate is zero.Substitute: 3x+4(0)=12 → 3x=12.Divide both sides by 3: x=12÷3=4.Thus, the x‑intercept is 4, which matches option B.Answer:B. 4