I’m super confused on this decoding can anyone help?

Tell whether the two rates form a proportion

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?

The graph shows the amount of money noah earned based on the number of lawns he cut. which list shows the dependent quantities in the graph?