so this is the question.... x^2 +y^2=4 y=2x-5 how do i do this???? (show full steps please)
Follow Math Help Forum on Facebook and Google+
Originally Posted by cheers so this is the question.... x^2 +y^2=4 y=2x-5 how do i do this???? (show full steps please) First this is not a linear system. It can be solved by substition $\displaystyle x^2+(2x-5)^2=4$ This is a quadratic equation. Expand out the parenthesis and sput into standard form and solve. Post back if you get stuck.
Originally Posted by cheers so this is the question.... x^2 +y^2=4 y=2x-5 how do i do this???? (show full steps please) substitute $\displaystyle (2x-5)$ for $\displaystyle y$ in the circle equation ... $\displaystyle x^2 + (2x-5)^2 = 4$ solve for x , then find y using the linear equation note you may get more than one solution for x
View Tag Cloud