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What is the equation of this line?

What is the equation of this line?-example-1
User Kim Aldis
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1 Answer

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slope:

find two places where the line neatly crosses the grid. As example, we can choose : (-2 , -7) and (2 , 1)

slope = rise/run

so:

slope = change in y/change in x

slope = (-7 - 1) / (-2 - 2)

slope = -8/-4

slope = 2

y-intercept:

this is where the blue line crosses the y (vertical) axis. This occurs when x = 0. y -intercept is: (0 , -3).

equation format: y = mx + b

where m = slope and b = y intercept

so:

y = 2x - 3

User Mahesh Patil
by
7.2k points

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