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. Find an ordered pair that represents a solution to the equation x + 2y = 20

Sagot :

we have

x + 2y = 20​

The linear equation represent the equation of a line

If a ordered pair is a solution of the equation, that means that the ordered pair lies on the line

so

Find a ordered pair that represents a solution

Assume the value of x

so

For x=1

substitute in the equation

(1)+2y=20

solve for y

2y=20-1

2y=19

y=19/2

y=9.5

therefore

The ordered pair (1,9.5) represents a solution