Find the value of k if it is known that the graph of y=kk goes through A (4,-80) Please explain, I don’t get this concept and really need help!

Note: Consider the equation is instead of .

Given:

The graph of goes through A(4,-80).

To find:

The value of k.

Solution:

We have,

It is passes through the point A(4,-80). It means, the point satisfy the equation.

Putting x=4 and y=-80, we get

Divide both sides by 4.

Therefore, the value of k is -20.

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10