SOLUTION: Please help me with these three equations. x = y + 2 1/2x + y = o y = 4/7x + 3 I am suppose to tell whether y varies directly as x. Please help I don't understand.

Question 510342: Please help me with these three equations.
x = y + 2
1/2x + y = o
y = 4/7x + 3
I am suppose to tell whether y varies directly as x.
Please help I don't understand.
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!
EQ1.
x = y +2
y = x -2
.
as x increases, y increases
.
EQ2.
1/2x + y = 0
y = -1/2x
.
as x increases, y decreases
.
EQ3.
y = 4/7x + 3
.
as x increases, y increases
.
Consider the graphs: EQ1 is red, EQ2 is green & EQ3 is blue.
.

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