Well, a linear function is proportional, a straight line (on a graph). And the numbers must not have the same answer. For instance, if the X input is 5, and the Y output is 7. And then another X input is 5, and the Y output is 8, that's non-linear.
So, the Answer would be the third graph. This is because the X values are steadily increasing, and so are the Y values.
For the X and Y values, for each time X increases by 1, Y increases by -8. This is, linear because both sides are constantly and evenly increasing.
$4/3=$1.33 per pound.
$9/8 = $1.13 per pound.
The second one is cheaper.
1 multiplication prop
2simplifying
3 Addition prop
4 simplifying
Answer:
the average height is between 65 and 72 inches
Step-by-step explanation: