This is a free lesson from our course in Algebra I
This lesson explains how to determine the equation of a line from a point and
an intercept. It also explains how to find the equation of a line for which both
the x-intercept and the y-intercept are given.
Generally speaking, if y-intercept = c and point (a, b), then the equation
is:
y = [{(b - c)x}/a ] + c. Note that if x-intercept = d and y-intercept = c, you can still
use the above rule. If you think about the x-intercept which is d, it basically
means the line passes through the point (d, 0). Hence, in this case, you have a line
with y-intercept = c and passing through point (d, 0). Using the rule from
above, the equation for this line is:
y = [{(0 - c)x}/d] + c , i.e.,
y = (-cx/d) + c.
People who saw this lesson also found the following lessons useful:
As many of you know, Winpossible's online courses use a unique teaching method where
an instructor explains the concepts in any given area to you in his/her own voice
and handwriting, just like you see your teacher explain things to you on a blackboard
in your classroom. This particular lesson includes the teacher's instruction, practice
questions as well as end-of-lesson quizzes for practice. As we mentioned above,
you can
enroll in our online course in Algebra I by clicking here.
The format of Winpossible's online courses is also very suitable for teachers who
are using an interactive whiteboard such as Smartboard on Promethean in their classrooms,
because the course lessons can be easily displayed on such interactive whiteboards.
Volume pricing is available for schools interested in our online courses. For more
information, please contact us at educators@winpossible.com.
