Question

What is an equation for the line that passes through the coordinates (2,7) and (0,1)

Answer 1

It gives you the y-intercept in the question: (0,1)
Use (y2-y1)/(x2-x1) to find the slope:

= (1-7) / (0-2)
= -6 / -2
= 3

Your answer is y=3x+1