Determine whether or not the following graph represents two quantities that are proportional to each other . Yes or no and why ?

2 x^2 -3x+p

sum of roots = 3/2

let other root be x

3+ x = 3/2

x= 3/2 - 3 = -3/2

product of roots = p/2

3× -3/2 = p/2

-9 = p

⭐⭐

-14

step-by-step explanation:

2x2 – 2(x+4)

=2x2-2（5+4）

=4-2×9

=4-18

=-14

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4