Wednesday

April 16, 2014

April 16, 2014

Posted by **Nicole** on Tuesday, January 20, 2009 at 5:28pm.

3x + y = 15

Find the two points of intersection.

I don't just want the answer, if you could tell me how to find it, it would save my life. The sqaure root is making it really hard for me to understand.

- calculus -
**bobpursley**, Tuesday, January 20, 2009 at 6:24pmfrom the second,y=15-3x

then square it...

225-90x+9x^2 check that, and put it in for y^2 in the first equation, rearrange it in quadratic form, and solve for x using the quadratic formula.

**Related Questions**

math - weloo Consider the two parabolas :y1=2x^2-3x-1 and y2=x^2+7x+20. (a) Find...

math - hilp meeee trying .... Consider the two parabolas :y1=2x^2-3x-1 and y2=x^...

math - hilp meeee trying .... Consider the two parabolas :y1=2x^2-3x-1 and y2=x^...

math - Question-2; Consider the function f(x)= -cos3x -4sin3x. (a)Find the ...

Calculus - Find the points of intersection for y=e^x and y=sin(2x). are there an...

Derivative Calculus - I just need my answers checked. 1) Find the derivative. f(...

Calculus - The area bounded between the line y=x+4 and the quadratic function y...

calculus - the tangent line to the curve y=1/3(x^3)-3x^2+11x+15 is parallel to ...

Math - How do you solve for the intersection points? x^2+y^2=25 4y=3x I know the...

Algebre=Please check - Could someone check my answers for these two questions, ...