The solution of y=-4x, 8x-y=6 through substitution method is (1/2,-2).
What is equation?
Equation is relationship between two or more variables expressed in equal to form. Equations of two variables look like ax+by=c. Standard form of equation of a line is y=mx+c where m is slope.
How to solve equations?
The given equations are y=-4x and 8x-y=6. We have to solve them using substitution method.
y=-4x-----------1
8x-y=6---------2
Put the value of y=-4x in equation 2
8x-(-4x)=6
8x+4x=6
12x=6
x=6/12
x=1/2
Put the value of x=1/2 in equation 1
y=-4x
y=-4*/2
y=-2
Hence the solution of y=-4x and 8x-y=6 is (1/2,-2) which is option A.
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