Find the equation of the straight line joining each of the following pairs of points (a) (0, 0) and (1,-1)

Expert Answers
lfryerda eNotes educator| Certified Educator

If you have more than one question, you need to make separate posts.

To find the equation of a line, you need to have the slope of the line and a point on the line.

The slope is found using the slope formula:





Now sub in the point and slope into the equation y=mx+b to get:



`-1=-1+b`   move -1 to left side



This means the equation of the line is `y=-x` .

salonigaba | Student

Slope m= y2-y1/x2-x1




equatio of line: y=mx+c




this the equation.