Đáp án:
Ta có y=5x−1y=5x−1
Khi x=−5x=−5 thì y=5.(−5)−1=−26y=5.(−5)−1=−26
Khi x=−4x=−4 thì y=5.(−4)−1=−21y=5.(−4)−1=−21
Khi x=−3x=−3 thì y=5.(−3)−1=−16y=5.(−3)−1=−16
Khi x=−2x=−2 thì y=5.(−2)−1=−11y=5.(−2)−1=−11
Khi x=0x=0 thì y=5.0−1=−1y=5.0−1=−1
Khi x=15x=15 thì y=5.15−1=0y=5.15−1=0
Ta có bảng sau: