Question

plz give the answer
give the answer step wise

Answer 1

Here is your answer mate:
As the points are given (1,2) than x=1 and y=2.
so put these values in the equation two
we get 4+4a=0.
Than 1+a=0.
a=-1.
Hope it helps you and if it does please mark as brainleist.

Answer 2

Answer:

-1

Step-by-step explanation:

x=1       y=2

y²+4ax=0

(2)²+4a(1)=0

4+4a=0

∴the value of a should be a number that could make the answer 0 and as we have 4+4a=0 ∴if we take the value of a as -1 then

4+4(-1)=0

4-4=0

0=0

∴a=-1