Sunday

February 1, 2015

February 1, 2015

Posted by **James** on Monday, September 6, 2010 at 7:45pm.

y = x^2 - 3

x + y = -1

- equation -
**MathMate**, Monday, September 6, 2010 at 7:51pmy appears in both equations to the first degree. You can eliminate y by equating the value of y from each equation.

Solve the resulting quadratic equation for x.

Back-substitute the values of x into the equations to get the corresponding values of y.

- equation -
**PsyDAG**, Monday, September 6, 2010 at 7:53pmSubstitute x^2 - 3 for y in the second equation.

x + x^2 - 3 = -1

x^2 + x - 2 = 0

(x + 2)(x - 1) = 0

Find the two possible values for x and insert to find y. Insert both sets of values into second equation to check.

**Answer this Question**

**Related Questions**

Algebra - Solve the equation 5x+7=13-7x graphically. then check your solution ...

pre calculous - solve each equation algebraically and check it by substituing ...

calculus - Please help me solve this equation. log[2](3)+log[2](x)=log[2](5)+log...

math - solve algebraically and check y=8x+3 y=-4x-21 8x+3=-4x-21 +4x +4x 12x+3=-...

algebra - Solve algebraically and check x^2 + 4y^2 = 4 x = 2y - 2

calculus - Please help me? ln(x+1)-ln(x-2)=ln(5) 1. Solve equation by setting up...

Triginometry - Solve the following equations algebraically and check. y=2x^2+2x+...

Pre-calculus-check answers - Write the slope-intercept form of the equation of ...

Algebra - Solve algebraically and check your potential solutions: sqrt((x+2) -x...

System of equation - solve algebraically x^2 + y^2 = 16 x - y = 4