图上距离(cm) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
实际距离(m) | 30 | 60 | 90 | 120 | 150 | 180 | 210 | 240 |
(1)图中的点A表示图上距离是1cm时,实际距离为30m.请你试着描出其他各点.
(2)图上距离与实际距离成________
(3)从图象可以看出这幅图的比例尺是________.
(4)当图上距离是12厘米时两地的实际距离是多少米?
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