Question 114086
NORMALLY TO SOLVE LINE EQUATIONS YOU SET Y=0 & SOLVE FOR X & THEN SET X=0 & SOLVE FOR Y.
IN THIS CASE [y=3x] YOU HAVE (0,0) FOR THIS SOLUTION.
HOWEVER YOU HAVE A SLOPE(m)=3 WHICH SAYS FOR EVERY 3 CHANGES IN Y VALUE YOU HAVE A COM[PANION CHANGE IN THE X VALUE OF 1.
EXAMPLE IF Y=3 THEN X=1 OR(1,3). IF Y=6 THEN X=2 OR (2,6).
THE FOLLOWING GRAPH WILL SHOW YOU WAHT THIS LINE LOOKS LIKE WHEN PROPERLY GRAPHED.
{{{ graph( 300, 300, -6, 6, -6, 6, y = 3x) }}} (graph 300x300 pixels, x from -6 to 6, y from -6 to 6, y = 3x).