4. Cho hệ phương trình: mx+4y=1
[x+my=4
a) Giải hệ phương trình khi m = 4.

b) Tìm các giá trị của m để hệ có nghiệm duy nhất (x;y)=(5;-1).

c) Tìm các giá trị của m để hệ có nghiệm duy nhất, vô nghiệm.

Two different linear functions are shown below with two points given from each function. use slope-intercept form or point-slope form to find the equation of each. linear function a points: (–5, –2), (–5, 7) linear function b points: (7, –5), (–2, –5) function a has: the equation of line a is: function b has: the equation of line b is:

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.

Adistribution has the five-number summary shown below. what is the third quartile, q3, of this distribution? 22, 34, 41, 55, 62