Math
posted by math help on .
the graph line passing through (1,1) , (2,4) make with positive xaxis angle equal is:
a) 30 degree
b) 45 degree
c) 60 degree
d) 135 degree

slope = (41)/(21) = 1
If Ø is the angle that the line makes with the xaxis, then
tanØ = 1
Ø = 135°
(draw the line to verify)