http://amsi.org.au/ESA_Senior_Years/SeniorTopic1/1b/1b_2content_1.html

https://www.vedantu.com/question-answer/are-the-name-horizontal-and-vertical-lines-drawn-class-9-maths-cbse-5f851da6ed668270c0006f03

https://www.quora.com/What-Is-the-name-of-horizontal-and-vertical-lines-of-Cartesian-plane

https://www.toppr.com/ask/en-om/question/in-the-cartesian-plane-the-horizontal-line-is-called-yaxis/

https://www.toppr.com/ask/question/write-the-answer-of-each-of-the-following-questionsi-what-is-the-name-of-horizontal/

https://www.mathopenref.com/coordhorizontal.html

https://www.varsitytutors.com/hotmath/hotmath_help/topics/cartesian-plane

https://www.mvorganizing.org/how-do-i-insert-multiple-horizontal-lines-in-word/

https://www.careerlauncher.com/cbse-ncert/class-9/Math/CBSE-%20Coordinate%20Geometry-Notes.html

https://www.mvorganizing.org/how-do-i-insert-multiple-horizontal-lines-in-word/

https://www.mathsteacher.com.au/year8/ch15_graphs/05_hor/ver.htm

https://mathinsight.org/cartesian_coordinates

https://courses.lumenlearning.com/wmopen-collegealgebra/chapter/introduction-points-and-lines-in-the-plane/

https://study.com/academy/lesson/what-are-horizontal-lines-definition-equations-quiz.html