Question

solution to the system of equations
$2x - 5y = 8 \: and \: x + y = 4$
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Answer 1

Answer:

2x−5y+4=0..(1)

2x+y−8=0..(2)

Isolate x from equation (1) and find the value of x and y.

2x−5y+4=0

or 2x=5y−4

x=(5y−4)/2

x −2 3 8

y 0 2 4

Similarly, isolate x from equation (2) and find the values of x and y

2x+y−8=0

or y=8−2x

x 1 2 3

y 6 4 2

Graph:

Both the lines intersect each other at point (3,2).

So, x=3,y=2