Berikut ini adalah pertanyaan dari rfli64461 pada mata pelajaran Matematika untuk jenjang Sekolah Menengah Atas
Jawaban dan Penjelasan
Berikut ini adalah pilihan jawaban terbaik dari pertanyaan diatas.
To determine the image of the point (-1,-2) reflected on the line x = 2, we need to note that the mirror line is a vertical line that passes through the point (2,0), which is a line parallel to the y-axis. So, the image of the point can be found by the following steps: Calculate the distance between the point (-1,-2) and the mirror line (ie line x=2) with the formula: d = |(ax + by + c)/sqrt(a^2 + b^2)| with a = 1, b = 0, and c = -2 (according to the equation of the line x = 2) d = |(1*(-1) + 0*(-2) - 2)/sqrt(1^2 + 0^2)| = 3 Draw a line that is parallel to the mirror line (i.e. line x = 2) and is 3 units away from it, as follows: Points (5,-2) and (5,2) are points on the line parallel to the mirror line and 3 units away from the mirror line. So, we can draw a line connecting the two points, which is a line with the equation x = 5. Reflect the point (-1,-2) on the line, as follows: The distance between the point and the mirror line is 3 units. Therefore, the image point to be sought is to the right of the mirror line and is 3 units away from that line. We can find the shadow point by shifting the point (-1,-2) 3 units to the right. After that, we also need to shift the image point 3/4 units down and 5/4 units to the left, according to the instructions "continue translating min three-fourths". Thus, the coordinates of the image point are as follows: x = -1 + 3 + (-5/4) = -3/4 y = -2 - (3/4)*(3/4) = -43/16 So, the image of the point (-1,-2) after being reflected on the line x=2 and continuing the translation -3/4 units to the left and -43/16 units down is (-3/4, -43/16)
Semoga dengan pertanyaan yang sudah terjawab oleh MRikyy dapat membantu memudahkan mengerjakan soal, tugas dan PR sekolah kalian.
Apabila terdapat kesalahan dalam mengerjakan soal, silahkan koreksi jawaban dengan mengirimkan email ke yomemimo.com melalui halaman Contact
Last Update: Wed, 12 Jul 23