时间/小时 | 0 | 1 | 2 | 3 | 4 | 5 | … |
路程/千米 | 0 | 200 | 400 | 600 | 800 | 1000 | … |
(1)把上表中时间和路程所对应的点描在下表中,再顺次连接起来。
(2)这列火车行驶的时间和路程成正比例吗?为什么?
(3)这列火车2.5小时可以行驶多少千米?行驶360千米需要多少小时?
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