Please answer ASAP this for a test

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

Which is greater or equal 312 mg or 312 dg

What is the slope-intercept of the linear function (3,5) and (2,1)