Wednesday

December 17, 2014

December 17, 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.

**Answer this Question**

**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^...

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

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

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

Calculus - Find the area between the two curves y1= x^2 - 4x + 5 and y2 = 2x - 3...

Math - Find the intersection of two lines. i have the answer just please tell ...

Math- How many points of intersection are there? - Let x1, x2,..., x20 be ...

calculus - I'm trying to find the intersection point of y=x-2 and y=sqrt(x). I ...