Question

The blue line of best fit for boys intersects the vertical axis at 55 centimeters and the point (12.5, 70). What equation best describes the boy's line of best fit?

Answer 1

you have two points: (0,55) and (12.5,70). The slope of that line is 15/12.5 = 1.2

y=1.2x+55
     or
h=1.2a+55