Question

True or False? The point-slope form of a line is y + y1 = m(x + x1), where m is the slope and (x1, y1) is a point on the line. It's false right?

Answer 1

False.

Point-slope form is: y-y1=m(x-x1)

They used sums instead of differences...

Answer 2

False

The correct point slope form passing through points (x1,y1) is
`(y-y1)=m (x-x1)` .

Explanation:

The formula for the point slope form passing through the point (a,b) is given by.

`(y-b)=m (x-a)`

Where m is the slope .

As given in the question.

m is the slope and (x1, y1) is a point on the line.

Thus the point slope form becomes

`(y-y1)=m (x-x1)`

Therefore the correct point slope form passing through points (x1,y1) is
`(y-y1)=m (x-x1)` .