Cho hàm số y = (2-4m) x+4. (m khác 1/2) a. Tìm m để hàm số nghịch biến
b. Tìm m biết hàm số qua A(1;5)
c. Vẽ đồ thị với m câu b. Tính góc tạo với Ox

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation:

a

step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

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