Select the correct answer. To solve this system of equations using substitution, what could be substituted in place of yin the first equation?
4x = 5 - 2y
y-2x = 7
OA. 7 - 21
ОВ.
42 - 5
5 - 4
OD. 21 + 7
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need more info

step-by-step explanation:

what do you mean by "representation"? graph? table? etc.

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)