Friday

December 19, 2014

December 19, 2014

Posted by **Liz** on Saturday, April 24, 2010 at 7:14pm.

y = 4x + 5

x - 2y = 4

- Algebra -
**Damon**, Saturday, April 24, 2010 at 7:46pmy = 4 x + 5, through (0,5) slope 4

2y = x - 4

y = (1/2) x - 2 , through(0,-2) slope (1/2)

now subtract second from first to get rid of y

0 = 3.5 x +7

x = -2

then y = -8+5 = -3

so they cross at (-2,-3)

check

y = 4x + 5

-3=4(-2)+5??

-3=-8+5 yes

x - 2y = 4

-2 -2(-3) =4 ??

-2 +6 = 4 sure enough

**Answer this Question**

**Related Questions**

College Algebra - solve systems of equations by graphing... I get how to graph ...

grasping algebra concepts - My book is showing the solution for graphing a ...

MATH - Please help me!!!!!!!!!!!!!!!1 Instructions a. If needed, rewrite the ...

Algebra 2 - how do i do these problems???? Graph each pair of equations in the ...

Precalculus - Let G be the graph of the parametric equations x=cos(4t)and y=sin(...

Precalculus - Let G be the graph of the parametric equations x=cos(4t)and y=sin(...

algebra 1 - I'm stuck on this problem. Can you help? -4x-9y=1 -x + 2y =-4 WHat ...

algebra - please give me step by step instructions on how to solve the following...

Algebra 1 (Reiny or Kuai) - 1. Which x-values should I choose to graph these ...

algebra - how do u graph equations?? it says use the ggraphing method but i dont...