质量(千克) | 0 | 1 | 2 | 3 | 4 | 5 | …… |
应付金额(元) | 0 | 5 | 10 | 15 | 20 | 25 | …… |
(2)把上表中的质量和应付金额所对应的点描在图上,再顺次连接各点。
(3)买5.5千克西瓜需要( )元;王阿姨买的西瓜质量是李叔叔买的4.5倍,她花的钱是李叔叔的( )倍。
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