Is x=1.5 a solution for 2x=9 if yes or no why?

No

Step-by-step explanation:

When a question asks you if a x value is a possible solution the first thing you should do is try it out!

SO let's replace the x in 2X=9 with 1.5

1.5×2= 3

IS 3 equal to 9?

NO it's not so 1.5 is not a possible solution

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)