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歡迎您訪(fǎng)問(wèn)數(shù)學(xué)考題練習(xí)：若函數(shù)y=x+b,當(dāng)x=2時(shí)y=3；則x=1時(shí)！

數(shù)學(xué)考題練習(xí)：若函數(shù)y=x+b,當(dāng)x=2時(shí)y=3；則x=1時(shí)

更新時(shí)間：2024-01-12 12:56:12作者：貝語(yǔ)網(wǎng)校

若函數(shù)y=x+b,當(dāng)x=2時(shí)y=3；則x=1時(shí)y=________.

試題答案

2

∵函數(shù)y=x+b，當(dāng)x=2時(shí)y=3，

∴3=2+b，

解得，b=1；

∴當(dāng)x=1時(shí)，y=1+b=1+1=2，即y=2．

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