Question 634679
Solve the following system of equations and check. Either an algebraic or graphic method will be accepted. 
x²+y²=25
3x-4y=0
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3x-4y = 0
y = 3x/4
Sub for y in the circle eqn
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{{{x^2 + (3x/4)^2 = 25}}}
{{{25x^2/16 = 25}}}
{{{x^2 = 16}}}
You can finish and check, right?