If the slope of a line is -2/3 and contains the points (1,-5) and (-4a, 2) what is the value of a?

a = -11/4

Step-by-step explanation:

Write an algebraic equation for the slope (using the definition of slope) and set the result = to the given -2/3:

          rise           2-(-5)              2

m = = = -

           run          -4a - 1              3

Cross-multiply:  3(2+5) = -8a - 1.

Then 3(7) = -8a -1, or 22 = -8a.                 22

Dividing both sides by -8, we get   a =

                                                                   -8

or a = -11/4.

your answer is a

step-by-step explanation:

plzplzplzplzplz mark brainliest i need it.

8y^50

step-by-step explanation: