What is the best height ratio of desks and chairs for students? Excuse me, what is the size of the desk and what should be paid attention to? In order to protect students' eyesight, the height of desks and chairs is designed according to a certain proportion. The research shows that if the height of the desk is y cm, the height of the chair (excluding the backrest) is x cm, and y is a linear function of x, the following two sets of qualified tables and chairs are given: the first set? Second set of x/cm? 10.0? 37.0 y/cm？ 27.0? 70.2 (1) Determine the functional relationship between y and x; (2) There is a chair with a height of 42.0 cm and a desk with a height of 78.2 cm. Do they match? Please explain the reason by calculation. Research shows that in order to protect students' eyesight and health, the height of desks and chairs must match. Let the height of the desk be y(cm) and the height of the chair be x(cm), and y should be a linear function of x, as shown in the following table. Chair height /cm? 40.0? 37.0 Table height /cm? 75.0? 70.2 (1) Try to determine the function expression between y and x (2) There is a chair with a height of 42.0 cm and a desk with a height of 87.8 cm. Please indicate whether the match is calculated. Generally, the height difference between the desktop and the chair and stool is 250-320mm, the desktop is 680-760mm, and the seat surface is 400-440mm, which is relatively soft. Leg space height ≥580mm, width ≥520mm. You can also look around the store and measure it according to the above method.
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