I’m confused on how to work the pie charts

What is the domain of the function f(x)=^9x

Aline that intersects one of two parallel lines intersects the other also always sometimes never

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?