Amusic school charges a registration fee in addition to a fee per lesson. music lessons last 0.5 hour. the equation y = 40x + 30 represents the total cost y of x lessons. find and interpret the slope and y-intercept of the line that represents this situation. then find four points on the line.

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.

use formula for the circle a=3.14

step-by-step explanation: