Question

A is the point with coordinates (x, 2y).

Answer 1

Answer:

x= -2 , y=5

Step-by-step explanation:

(x+3x)/2 = -4

4x/2 = -4

4x= -8

x = -2

(2y+4y)/2=15

6y/2=15

6y=30

y=5

Answer 2

Answer:

$\sf x=-2 \: \: \: and \: \: \: y=5$

Step-by-step explanation:

$\frac{\sf (x+3x)}{2} = - 4$

$\frac{\sf 4x}{2} = - 4$

$\sf 4x = -8$

$\sf\huge x=-2$

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$\frac{\sf (2y+4y)}{2} = 15$

$\frac{\sf 6y}{2} = 15$

$\sf 6y=30$

$\sf\huge y=5$