1) ve he truc toa do va danh dau cac vi tri diem A(2:1,5);B ( -3;\(\frac{3}{2}\)) ; C ( 2.5 ;0); D ( 0;-3)
2)cho ham so y =f(x)= 5 -2x
a) tinh f (-2),f(-1),f(0), f(3)
b) tinh cac gia tri cua x ung voi y = 5;3;-1
giup minh nha cam on may ban
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