THE RELATIONSHIP BETWEEN STUDENT’S LEARNING MOTIVATION AND SELF-CONCEPT ALTOGETHER TOWARD STUDENT’S MATHEMATICAL COMMUNICATION ABILITY AT GRADE IX SMP NEGERI 1 LUBUK PAKAM ACADEMIC YEAR 2014/2015

This research is attempted to know the Relationship between Student’s Learning Motivation and Self-Concept Altogether toward Student’s Mathematical Communication Ability at Grade IX SMP Negeri 1 Lubuk Pakam Academic Year 2014/2015 with 56 respondences.
From the instrument test, the results were found as follows: (1) simple regression equation Y on X1 was Ŷ = 32,891 + 0,430X1, simple linier regression test Y on X1 was Fcal = 1,272 < Ftab = 1,897 and belongs to linear regression at significancy level 5%, (2) simple regression equation Y on X2 was Ŷ = 33,679 + 0,442X2, simple linear regression test Y on X2 was Fcal = 0,616 < Ftab = 1,897 and belongs to linear regression at significancy level 5%.
The data analysis of the variable correlation can be seen as follows: (1) learning motivation (X1) with mathematical communication ability (Y) is rcalculated = 7,730 > rtable = 4,020 show the positive correlation at significancy level 5%, (2) self-concept (X2) with mathematical communication ability (Y) is rcal = 8,375 > rtab = 4,020 show the positive correlation at significancy level 5%.
Based on the result of research, it can be concluded that there is a positive relationship between learning motivation (X1) and mathematical communication ability (Y), there is positive relationship between self-concept (X2) and mathematical communication ability (Y), there is a is positive relationship between learning motivation (X1) and self-concept (X2) altogether toward students’ mathematical communication ability (Y).