# Thread: How do I solve equations graphichally

1. ## How do I solve equations graphichally

Hi,
How do I solve the following two equations graphically?

2s + 10p = 1008
3s + 16p = 1596

And...

30.99 + 87.48 - 305.73 = 0

Never solved equations graphically,can someone show me where to start,how to I decide initial values

Thanks...

2. Originally Posted by manich44
Hi,
How do I solve the following two equations graphically?

2s + 10p = 1008
3s + 16p = 1596

A couple of methods spring to mind.

You can graph the equations very carefully finding the intersection of the 2 lines. This is the solution point. But unless you have some graphing paper it will be quite difficult to find an accuarate answer.

The other way is using a graphical calculator, do you have one?

Originally Posted by manich44

And...

30.99 + 87.48 - 305.73 = 0

Never solved equations graphically,can someone show me where to start,how to I decide initial values

Thanks...
And.... that makes no sense, please read what you write before posting.

3. Originally Posted by manich44
Hi,
How do I solve the following two equations graphically?

2s + 10p = 1008
3s + 16p = 1596

And...

30.99 + 87.48 - 305.73 = 0

Never solved equations graphically,can someone show me where to start,how to I decide initial values

Thanks...

to graph the lines
set s=0 then solve for p to find the p-axis intercept
set p=0 then solve for s to find the s-axis intercept
these 2 points show where the lines are

to solve for the intersection of the lines
do a simultaneous equation

4. ## RE How do I solve equations Graphically

Hi
No dont have a graphing calculator.Yes I know it can be done with graph paper but dont know where to start,how do I find initial values to start graph.I already know answer to simultaneous eqations s = 84 p = 84 just wanted to have a go graphically.

And...30.99 + 87.48 - 305.73 = 0 or y = h3 + 87.48h-305.73=0

I know it makes no sense,thats why I am looking for some help

Thanks Mark

5. ## intercepts on the s and p axis

have you found the intercepts on the s and p axis?
for the 2 lines

6. Originally Posted by bigwave

to solve for the intersection of the lines
do a simultaneous equation

This is the best way, but its not what the poster has asked.

Originally Posted by bigwave
have you found the intercepts on the s and p axis?
for the 2 lines
manich44, do you know how to do this??

recall,

Originally Posted by bigwave
to graph the lines
set s=0 then solve for p to find the p-axis intercept
set p=0 then solve for s to find the s-axis intercept