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1
锛庡湪涓�娆″嚱鏁?/p>
y=
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2x+8
涓紝鑻?/p>
y>0
锛屽垯锛?/p>
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A
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x>4 B
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x<4 C
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x>0
D
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x<0
2
锛庡涓嬪乏鍥炬槸涓�娆″嚱鏁?/p>
y=kx+b
鍦板浘璞★紝褰?/p>
y<2
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x
鍦板彇鍊艰寖鍥存槸锛?/p>
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A
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x<1 B
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x>1 C
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x<3
D
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x>3
3
锛庝竴娆″嚱鏁?/p>
y=3x+m
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2
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m
鍦板彇鍊艰寖鍥存槸锛?/p>
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A
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m
鈮?/p>
2 B
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m
鈮?/p>
锛?/p>
2 C
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m>2 D
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m<2
4
锛庡凡鐭ュ嚱鏁?/p>
y=mx+2x
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2
锛岃浣垮嚱鏁板�?/p>
y
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x
鍦板澶ц�屽澶э紝鍒?/p>
m
鍦板彇鍊艰寖鍥存槸锛?/p>
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A
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m
鈮?/p>
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2