Does equation below representing relation a function both a relation and a function for neither a relation or a function y=x2-9x

How do you determine if an ordered pair is a solution to a given equation?

What is 140% of 25? because i need

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next