IB MAI HL Functions Topic 2.1 Linear Equations & Graphs (id: ba64fc14e)

本题目来源于试卷: IB MAI HL Functions Topic 2.1 Linear Equations & Graphs，类别为 IB数学

[填空题]
The diagram below shows thjgp4g wm4bg6( e1 ,x x7q(1qos rtjr:+ql5a8josmq 4ag triangle ABC. The point C has coordinates (9,5) and the equation of the 8tj+xoo5 1xqsq1m4qrrg sj, aalq:7( line (AB) is x+4y=12.

1.Find the coordinates of:
(1)A; y =   
(2)B. x =   
2.Show that the length of [AB] is 12.412.4 correct to three significant figures. AB ≈   
The point D lies on the line (AB). The line (CD) is perpendicular to the line (AB).
3.Find:
(1)the gradient of (CD); $m_{CD}$ =   
(2)the equation of (CD). y =ax+b a =    b =   
4.Find the coordinates of D. (a,b) a=   b=  
5.Calculate the length of [CD] correct to three significant figures. CD ≈   
6.Calculate the area of triangle ABC. A ≈   

参考答案:
空格1: 3±2%  空格2: 12±2%  空格3: 12.4±2%  空格4: 4±2%  空格5: 4  空格6: −31  空格7: ​8  空格8: 1  空格9: ​4.12±2%  空格10: 25.5±2% 


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