Which statement is true about f(x)=-2/3[x+4]-6? The graph of f(x) has a vertex of (–4, 6). The graph of f(x) is a horizontal stretch of the graph of the parent function. The graph of f(x) opens upward. The graph of f(x) has a domain of x < –6.

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?