The ratio table shows the costs for different amounts of bird seed. Find the unit rate in dollars per pound. Amount (pounds) 5 10 15 20 Cost (dollars) 11.5 23 34.50 46 (Pounds on top of cost on a chart)

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4