I need to graph "y = -2x+5" and "y = 4/5x-3"...

I don't think it's possible to help graphing on this site.. so can you please tell me any other sites where it would show how to graph those equations?

also, I'm having trouble graphing INEQUALITIES. any help on that??

thanks a lot :)
any help is appreciated.. thanks :)

here is an easy way to draw a graph of a straight line if you given the equation in the form y=mx+b

remember that m is the slope and b is the y-intercept and slope = rise/run
then for y = (4/5)x - 3, rise/run = 4/5
and the y-intercept is -3

1. plot the y-intercept (0,-3)
2. from there count 5 units to the right, then 4 units up, basically doing a run of 5 and a rise of 4.

join the two points, and you are done.

for the first one:
y = -2x + 5 or y = (-2,1)x + 5

plot (0,5), and from there count 1 unit to the right and then 2 units down, join the points ...

All done

near the end

<<y = -2x + 5 or y = (-2,1)x + 5 >>
should read:

y = -2x + 5 or y = (-2/1)x + 5

Thank you VERY much! You're my savior :)

just one more question.. I NOW understood how to graph equations.. but I still have to graph inequalities, which seems much more complicated from my point of view.

I've got two inequalities that I have to graph.

1. y > 2/3x-4
2. y < -2

NOTE: Number 1, where it says "y > 2/3x-4"... well under ">" there is a line/dash, as to mean that it's "greater than or equal to". I hope you understand what I mean..

thanks for your help.. :)

y ≥ (2/3)x-4

graph y = (2/3)x - 4, then shade in the region ABOVE that line

had it been

y > (2/3)x-4 the boundary is the line
y = (2/3)x - 4, so draw a dotted line instead of a solid line

in general if y > mx + b
draw a dotted line for y = mx + b and shade in the region above the line
if y < mx + b
draw a dotted line for y = mx + b and then shade in the region BELOW the line

okayyy..

what about "y < -2" ????

Sure! I can help you with graphing equations and inequalities. There are many online graphing websites available where you can graph equations and inequalities easily.

Here are a few popular ones:
1. Desmos: Desmos is a user-friendly graphing calculator website that allows you to graph equations and inequalities. Simply visit desmos.com, enter your equations in the provided space, and it will generate the graph for you.

2. GeoGebra: GeoGebra is another great online tool for graphing equations and inequalities. It offers various functionalities, including graphing and algebraic calculations. You can visit geogebra.org and explore their graphing features.

3. Symbolab: Symbolab is a website that not only provides graphing capabilities but also offers step-by-step solutions to equations and inequalities. It can be accessed at symbolab.com and allows you to graph equations and inequalities easily.

Now, let's talk about graphing inequalities. Graphing inequalities is slightly different from graphing equations. To graph an inequality, follow these steps:

1. Rewrite the inequality in slope-intercept form, if possible, which is y = mx + b. For example, y < 2x - 3 can be rewritten as y = 2x - 3.

2. Treat the inequality as an equation (ignoring the inequality symbol) and graph the line using the slope-intercept form. For the example above, graph the line y = 2x - 3. This line represents the boundary of the solution.

3. Determine whether the inequality should be graphed as a solid line or a dashed line. If the inequality includes "≤" or "≥," use a solid line. If it includes "<" or ">", use a dashed line.

4. Choose a test point that is not on the line and substitute it into the inequality. If the inequality is true, shade the region containing the test point. If it's false, shade the opposite region. This shaded region represents the solution to the inequality.

Remember to label the lines and any important points on the graph for clarity.

I hope this helps! If you have any further questions, feel free to ask.