I don't know how to write an equation explicitly of y. I'm confused. Please help and explain. Thanks!
+36915 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...
+36915 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
