Note: Consider the equation is [tex]y=kx[/tex] instead of [tex]y=kk[/tex].
Given:
The graph of [tex]y=kx[/tex] goes through A(4,-80).
To find:
The value of k.
Solution:
We have,
[tex]y=kx[/tex]
It is passes through the point A(4,-80). It means, the point satisfy the equation.
Putting x=4 and y=-80, we get
[tex](-80)=k(4)[/tex]
Divide both sides by 4.
[tex]\dfrac{-80}{4}=k[/tex]
[tex]-20=k[/tex]
Therefore, the value of k is -20.
