质量(千克) | 1 | 2 | 3 | 4 | 5 | 6 | …… |
总价(元) | 1.9 | 3.8 | 5.7 | 7.6 | 9.5 | 11.4 | …… |
(1)
(2)与总价7.6元相对应的质量是
(3)总价与质量中相对应的两个数的比值所表示的意义是
(4)因为比值一定,所以表格中购买面粉的总价和购买面粉的质量成
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