Write the equation in slope intercept form

Question

Write in slope intercept form (1,-1) (2,0)

Answer 1

Hi Megan,

The equation of a line written in slope-intercept form would be in the form:

y = mx + b where m is the slope and b is the y-intercept.

You can find the slope of the line using the coordinates of the two points in the problem:

-1 - 0 = -1 = 1

1 - 2 -1

The slope, m, will be 1.

Then using a slope of 1 and the coordinates of either point, you can determine the y-intercept , b.

Let's use (2,0) :

y = mx + b

0 = 1 • 2 + b

0 = 2 + b

0- 2 = 2 + b -2

-2 = b

The y-intercept will be -2.

The equation of the line will be : y = 1x - 2 OR y = x - 2