217k views
5 votes
How do you find the equation of line passing through (0,0) and (4,4)

1 Answer

4 votes

Answer:

y = mx

Explanation:

It depends on what form of the line that you want. Usually the slope intercept form is wanted.

y = mx + b We need to have the m (slope) and the b (the y-intercept)

The slope is the change in y over the change in x.

Ordered pairs are in the form (x,y)

(0,0) and (4,4) Have x's of 4 and 0, and y's of 4 and 0. We subtract these to find the changes in y and x.


(4-0)/(4-0) This is
(4)/(4) which is the same as 1. The slope (m) is 1.

Now we need to find the y -intercept. The y intercept is the point where x is 0 (0,b). They give us this point (0,0,) So the y -intercept is zero.

y = 1m + 0

or y =mx

User Matt Flowers
by
7.1k points