Asystem of equations has no solution. if y= 8x + 7 is one of the equations which could be the other equation?
y= 8x+7
y = 8x-7
y=-8x+ 7
y=-8x-7

Step-by-step explanation:

If two equations are the same, then the system of equations has infinitely many solutions.

If two equations different only constant number, then the system of equations has no solution (coefficient at x in both equations is the same and coefficient at y is the same).

Therefore for y = 8x + 7 other equation is y = 8x - 7.

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: