The graph shows the distance, y, in miles, of a moving motorboat from an island for a certain amount of time, x, in hours: The graph is down below

What is the speed of the motorboat? (1 point)
30 miles per hour
45 miles per hour
15 miles per hour
135 miles per hour

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

0,0

step-by-step explanation: