answer: a. input, output
explanation: this is because the x values can not repeat in a function. if they do, they would not pass the vertical line test, and therefore it would not be a function. so, each input and output must be different values. :)
Answer:
what is it asking???? it doesn't make sense
Well the graph with the highest slope means it is more expensive.
The slope of the red apples = 2x.
We need the slope of the green apples.
*solving*
The slope of the green apples = 3/2x
Because 2 > 3/2, red apples are more expensive