Question

Solutions to y = 3x and x^2 + y^2 =10

Answer 1

for x=+1 , y=3

for x=-1 , y=-3

Explanation:

y=3x and x^2+y^2=10

y^2=9x^2

x^2+9x^2=10

10x^2=10

x^2=1

x=1 and x=-1

for x=1 , y=3x that means y=3

for x=-1 , y=3x that means y=-3