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I don't know how to write an equation explicitly of y. I'm confused. Please help and explain. Thanks!

 Jan 14, 2019
 #1
avatar+16487 
+2

Basically , solve the equation for 'y'

 

x - 3/2 y = -12       add 12   and 3/2 y to both sides of the equation

3/2y = x+12            multiply both sides by 2/3

y = 2/3x + 8          This IS a function...it is the equation of a line...

 

Think you can now do the second one?   Try it......reply if you need more help...cheeky

 Jan 14, 2019
 #2
avatar
0

I don't believe that I did it correctly. I got y=49-x².

Guest Jan 14, 2019
 #3
avatar+16487 
+1

Let's see:

 

y^2 - x^2 +1 = 50

y^2 = 50 - 1 + x^2

y = + - sqrt(49+x^2)           No it is not a function......there is two values of 'y' for a given x  

ElectricPavlov  Jan 14, 2019
 #4
avatar
0

Oh okay! Now I understand it better. Thank you for your help.

Guest Jan 14, 2019
 #5
avatar+96439 
0

THX, EP.....!!!!

 

 

cool cool cool

CPhill  Jan 14, 2019

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