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如图,一次函数$y=kx+b\left(k\neq 0\right)$与反比例函数$y=\frac{a}{x}({a≠0})$的图象在第一象限交于$A$、$B$两点,$A$点的坐标为$\left(m,4\right)$,$B$点的坐标为$\left(3,2\right)$,连接$OA$、$OB$,过$B$作$BD\bot y$轴,垂足为$D$,交$OA$于$C$.若$OC=CA$,

如图,一次函数$y=kx+b\left(k\neq 0\right)$与反比例函数$y=\frac{a}{x}({a≠0})$的图象在第一象限交于$A$、$B$两点,$A$点的坐标为$\left(m,4\right)$,$B$点的坐标为$\left(3,2\right)$,连接$OA$、$OB$,过$B$作$BD\bot y$轴,垂足为$D$,交$OA$于$C$.若$OC=CA$,

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如图,一次函数$y=kx+b\left(k\neq 0\right)$与反比例函数$y=\frac{a}{x}({a≠0})$的图象在第一象限交于$A$、$B$两点,$A$点的坐标为$\left(m,4\right)$,$B$点的坐标为$\left(3,2\right)$,连接$OA$、$OB$,过$B$作$BD\bot y$轴,垂足为$D$,交$OA$于$C$.若$OC=CA$,

$\left(1\right)\because $点$B\left(3,2\right)$在反比例函数$y=\frac{a}{x}$的图象上,$\therefore a=3\times 2=6$,$\therefore $反比例函数的表达式为$y=\frac{6}{x}$,$\because $点$A$的纵坐标为$4$,$\because $点$A$在反比例函数$y=\frac{6}{x}$图象上,$\therefore A(\frac{3}{2}$,$4)$,$\therefore \left\{\begin{array}{l}{3k+b=2}\\{\frac{3}{2}k+b=4}\end{array}\right.$,$\therefore \left\{\begin{array}{l}{k=-\frac{4}{3}}\\{b=6}\end{array}\right.$,$\therefore $一次函数的表达式为$y=-\frac{4}{3}x+6$;$(2)$如图$1$,过点$A$作$AF\bot x$轴于$F$交$OB$于$G$,$\because B\left(3,2\right)$,$\therefore $直线$OB$的解析式为$y=\frac{2}{3}x$,$\therefore G(\frac{3}{2}$,$1)$,$A(\frac{3}{2}$,$4)$,$\therefore AG=4-1=3$,$\therefore S_{\triangle AOB}=S_{\triangle AOG}+S_{\triangle ABG}=\frac{1}{2}\times 3\times 3=\frac{9}{2}$.$(3)$如图$2$中,①当$\angle AOE_{1}=90^{\circ}$时,$\because $点$A(\frac{3}{2}$,$4)$,$\therefore $直线$AC$的解析式为$y=\frac{8}{3}x$,$\therefore $直线$OE_{1}$的解析式为$y=-\frac{3}{8}x$,当$y=2$时,$x=-\frac{16}{3}$,$\therefore E_{1}(-\frac{16}{3}$,$2)$;②当$\angle OAE_{2}=90^{\circ}$时,可得直线$AE_{2}$的解析式为$y=-\frac{3}{8}x+\frac{73}{16}$,当$y=2$时,$x=\frac{41}{6}$,$\therefore E_{2}(\frac{41}{6}$,$2)$.综上所述,满足条件的点$E$坐标为$(-\frac{16}{3}$,$2)$或($\frac{41}{6}$,$2)$.

$\left(1\right)\because $点$B\left(3,2\right)$在反比例函数$y=\frac{a}{x}$的图象上,$\therefore a=3\times 2=6$,$\therefore $反比例函数的表达式为$y=\frac{6}{x}$,$\because $点$A$的纵坐标为$4$,$\because $点$A$在反比例函数$y=\frac{6}{x}$图象上,$\therefore A(\frac{3}{2}$,$4)$,$\therefore \left\{\begin{array}{l}{3k+b=2}\\{\frac{3}{2}k+b=4}\end{array}\right.$,$\therefore \left\{\begin{array}{l}{k=-\frac{4}{3}}\\{b=6}\end{array}\right.$,$\therefore $一次函数的表达式为$y=-\frac{4}{3}x+6$;$(2)$如图$1$,过点$A$作$AF\bot x$轴于$F$交$OB$于$G$,$\because B\left(3,2\right)$,$\therefore $直线$OB$的解析式为$y=\frac{2}{3}x$,$\therefore G(\frac{3}{2}$,$1)$,$A(\frac{3}{2}$,$4)$,$\therefore AG=4-1=3$,$\therefore S_{\triangle AOB}=S_{\triangle AOG}+S_{\triangle ABG}=\frac{1}{2}\times 3\times 3=\frac{9}{2}$.$(3)$如图$2$中,①当$\angle AOE_{1}=90^{\circ}$时,$\because $点$A(\frac{3}{2}$,$4)$,$\therefore $直线$AC$的解析式为$y=\frac{8}{3}x$,$\therefore $直线$OE_{1}$的解析式为$y=-\frac{3}{8}x$,当$y=2$时,$x=-\frac{16}{3}$,$\therefore E_{1}(-\frac{16}{3}$,$2)$;②当$\angle OAE_{2}=90^{\circ}$时,可得直线$AE_{2}$的解析式为$y=-\frac{3}{8}x+\frac{73}{16}$,当$y=2$时,$x=\frac{41}{6}$,$\therefore E_{2}(\frac{41}{6}$,$2)$.综上所述,满足条件的点$E$坐标为$(-\frac{16}{3}$,$2)$或($\frac{41}{6}$,$2)$.

$\left(1\right)\because $点$B\left(3,2\right)$在反比例函数$y=\frac{a}{x}$的图象上,$\therefore a=3\times 2=6$,$\therefore $反比例函数的表达式为$y=\frac{6}{x}$,$\because $点$A$的纵坐标为$4$,$\because $点$A$在反比例函数$y=\frac{6}{x}$图象上,$\therefore A(\frac{3}{2}$,$4)$,$\therefore \left\{\begin{array}{l}{3k+b=2}\\{\frac{3}{2}k+b=4}\end{array}\right.$,$\therefore \left\{\begin{array}{l}{k=-\frac{4}{3}}\\{b=6}\end{array}\right.$,$\therefore $一次函数的表达式为$y=-\frac{4}{3}x+6$;$(2)$如图$1$,过点$A$作$AF\bot x$轴于$F$交$OB$于$G$,$\because B\left(3,2\right)$,$\therefore $直线$OB$的解析式为$y=\frac{2}{3}x$,$\therefore G(\frac{3}{2}$,$1)$,$A(\frac{3}{2}$,$4)$,$\therefore AG=4-1=3$,$\therefore S_{\triangle AOB}=S_{\triangle AOG}+S_{\triangle ABG}=\frac{1}{2}\times 3\times 3=\frac{9}{2}$.$(3)$如图$2$中,①当$\angle AOE_{1}=90^{\circ}$时,$\because $点$A(\frac{3}{2}$,$4)$,$\therefore $直线$AC$的解析式为$y=\frac{8}{3}x$,$\therefore $直线$OE_{1}$的解析式为$y=-\frac{3}{8}x$,当$y=2$时,$x=-\frac{16}{3}$,$\therefore E_{1}(-\frac{16}{3}$,$2)$;②当$\angle OAE_{2}=90^{\circ}$时,可得直线$AE_{2}$的解析式为$y=-\frac{3}{8}x+\frac{73}{16}$,当$y=2$时,$x=\frac{41}{6}$,$\therefore E_{2}(\frac{41}{6}$,$2)$.综上所述,满足条件的点$E$坐标为$(-\frac{16}{3}$,$2)$或($\frac{41}{6}$,$2)$.