How do you graph 2x+5y=102x+5y=10 by plotting points?

1 Answer
EZ as pi
Jul 3, 2016

Write the equation as y = mx + c y=mx+c
Choose x-values and work out y-values

Explanation:

It is difficult to find points when the equation is in this form.
Change it into y = mx + cy=mx+c

Then you can choose any x-value and work out its corresponding y-value. It is a good idea to have about 5 points, two with negative x-values, x= 0 and two with positive x-values.

This will give you a nice spread and you will easily be able to see if there are errors, because the points will not all lie in a straight line as they should.

2x + 5y = 102x+5y=10
5y = -2x +10 " " rArr " y = -2/5x + 25y=−2x+10 ⇒y=−25x+2

When x = -5, y = 0, When x= 0, y = 2 etc

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