What is the x-value of the solution to this systems of equations?
-4x + 9 = -3y
y = 4 - x

{x,y} = { 3,1} ig = (1)

Step-by-step explanation:

y

[2] y = -x + 4

// Plug this in for variable y in equation [1]

[1] -4x + 3•(-x +4) = -9

[1] -7x = -21

// Solve equation [1] for the variable x

[1] 7x = 21

[1] x = 3

// By now we know this much :

x = 3

y = -x+4

// Use the x value to solve for y

y = -(3)+4 = 1

answer: 1) twenty-seven times y

              2) twenty-seven multiplied by y

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: