修路长度/米 | 0 | 100 | 200 | 300 | 400 | 500 |
时间/小时 | 0 | 1 | 2 | 3 | 4 | 5 |
(1)该工程队修路长度与所用时间成正比例吗?为什么?
(2)下图是该工程队修路长度与相应时间关系的图像,说一说它有什么特点?
(3)照这样计算,该工程队9小时修路多少米?
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2