to make a perpendicular function from another we must take its slope and make two transformations
the slope of y=1/3x is 1/3
the transformations:
1.
reverse the number

2.
and change the sign

ok we have the slope now need the general equation of the line

where m is the slope , b a cut point and (x,y) a point
so, we have the slope=-3 , and the point (2,-3) we can replace to find b

now we can replace b and the slope to have the final equation
Given that i<span>f
there are x teams in a league and each team plays every other team
twice, then the total number of games (n) to be played is given by

If </span><span>a chess league has 15 teams the total number of games to be played if each team plays every other team twice is given by

</span>
5 degrees because 5 + (-5) is 0
hope this helped
:)
Step-by-step explanation:
hope I understand your qyestion
Equation 1 : R+G=20
Equation 2 : 7R+3G=9
Multiply Equation by 3, it becomes
3R+3G=60 ...... Equation 3
Now Equation 3 minus Equation 2
-4R = 51
R = - 51/4
Sub R into Equation 1, you can find G