How do you graph y=9/2x-7y=92x−7 by plotting points?

1 Answer
MeneerNask
Mar 1, 2016

Since this is a linear function, you only need two points.

Explanation:

Usually x=0x=0 is a good start. This will give you (0,-7)(0,−7)
The other xx to choose better be even, to avoid fractions.
Let's take x=4x=4 (just a hunch). This will give you (4,11)(4,11)
Just to make sure (and check yourself in drawing) you may choose a third point x=-2->(-2,-16)x=−2→(−2,−16)

Now draw a straight line through two of the points and make sure it also goes through the third:
graph{4.5x-7 [-41.1, 41.1, -20.56, 20.56]}

Related questions
See all questions in Graphs in the Coordinate Plane
Impact of this question
1508 views around the world
You can reuse this answer
Creative Commons License