The sum of 2fifteens and 10 fifteens
2/15 + 10/15=12/15=4/5
the average diastolic blood pressure for adults is 120/80 mmhg
usually the 120/80 is very normal and anything under 110/70 is very dangerous and anything over 140/90 is dangerous as well
y = 8x
the slope is 8 and the y intercept is 0
that means our line will cross through the origin.
to graph start at the origin and move up 8 and right one or down 8 and left one. with either of these two points you should be able to complete your graph.