Friday

April 25, 2014

April 25, 2014

Posted by **lila** on Thursday, October 8, 2009 at 2:08pm.

could you please take me through the steps of solving the simultaneous equation graphically thank you.

y-x+4=0

y-8+x=0

- algebra -
**jim**, Thursday, October 8, 2009 at 3:45pmBy solving it graphically, I presume the question means draw the graph, and read off the answer from the point where the lines cross.

To do that, you need to draw each of the two lines.

Start with the first one: y-x+4=0. You need to find two points on that line, then use your ruler to draw the straight line that joins them. Any ttwo points will do, but the intercepts, where x=0 and where y=0 are usually good.

So, when x=0, we have y-0+4=0, or y=-4, so one point is (0, -4)

When y=0, we have 0-x+4=0, or x=4, so the point (4,0) is on this line.

Draw the line passing through (0,-4) and (4,0).

Now do the same for the other line.

The two lines cross at your answer, and you can read off both x and y. (Check: You should see that x=6 at your answer)

**Related Questions**

Algebra - Explain the difference between solving a linear equation graphically ...

pre algebra - How do I solve this equation the find te slope of the line? Please...

math simultaneous equation with surds - ive got quite far but im stuck, can you ...

pre algebra - simplify: (2k+7)(7k-1)\ can someone please help me solve this ...

algebra - x-7/5= -3 please take me through the steps

Algebra - Please guide in solving the following. I need the steps to take...in ...

Algebra 2 - Solve this equation graphically. xy=-7 I dont understand how you get...

college algebra - Please show me the steps to solving this equation:-) √5(...

Math - 9(x+2)(x+1)-2(x+2)-4(x+1)=0 I'm in the middle of solving an equation. I ...

Algebra - I have never had algebra and cannot figure out how to work through the...