Explanation:
help with what ? what do you need ?
the slope of the line ? the line equation ?
if that is the case :
remember, the slope is the ratio
y coordinate difference / x coordinate difference
when going from one point to another on the line.
for that I always recommend to find points with integer coordinates.
we find e.g.
(0, 0) and (12, 21)
going from (0, 0) to (12, 21)
x changes by 12 (from 0 to 12).
y changes by 21 (from 0 to 21).
so, the slope is
+21/+12 = 21/12 = 7/4
for the line equation remember the general form :
y = ax + b
a being the slope, b being the y-intercept (the y value when x = 0).
and so, the line equation is
y = (7/4)x + 0 = (7/4)x = 7x/4
since the line goes through (0, 0), this gives us the y-value, when x = 0 : also 0.