Question #b0bac

1 Answer
Alan P.
Feb 12, 2017

Y=-(3/2X+4)

Explanation:

A single equation with two unknowns will not have any unique solution.

We could however "solve" this to give an expression for Y in terms of X:

color(white)("XXX")3X+2Y=-8

color(white)("XXX")rarr 2Y=-3X-8

color(white)("XXX")rarr Y = -3/2X-4

Note that the graph of 2X+3Y=-8 (below) is not a single point;
rather it is a line giving infinitely many solution pairs for (X,Y)
color(white)("XXX")rarr Y= -(3/2X+4) graph{-(3/2x+4) [-5.67, 4.196, -4.36, 0.573]}

Related questions
See all questions in Systems Using Substitution
Impact of this question
1083 views around the world
You can reuse this answer
Creative Commons License