# Hi!! please need help putting formula's on graphs..

• Sep 11th 2012, 07:13 AM
Hi!! please need help putting formula's on graphs..
Hi there!!!(Hi)

I am in need of some urgent help... if anyone would be so kind as to help me i would soooo appreciate it!! (Bow)

I'm a homeschooled missionary in Mozambique, and have exams coming up next week, and i need to understand this one problem, but i can't!! Here it is:

How do i put the formulae P=50 + 2T and P=20 + 3T on a axis graph? i have axis Y and axis X.

If i must explain any further, i so would appreciate any help!!

THANK YOU!!

• Sep 11th 2012, 07:36 AM
emakarov
Re: Hi!! please need help putting formula's on graphs..
Quote:

Originally Posted by westraad
How do i put the formulae P=50 + 2T and P=20 + 3T on a axis graph? i have axis Y and axis X.

You should either have Y = 50 + 2X with axes Y and X or P = 50 + 2T with axes P and T. Assuming the latter, choose some values of the independent variable, i.e., T, and compute the corresponding values of the dependent variable, i.e., P. E.g., for T = 1 you get P = 50 + 2 * 1 = 50 + 2 = 52. Then plot the resulting pairs (T, P) on the graph and connect them. As it turns out, the graph of P = 50 + 2T is a straight line, so it is sufficient to find two points. Choose any T1, T2, compute P1 = 50 + 2 * T1, P2 = 50 + 2 * T2, plot (P1, T1) and (P2, T2) and connect them.
• Sep 11th 2012, 07:44 AM
Prove It
Re: Hi!! please need help putting formula's on graphs..
Quote:

Originally Posted by westraad
Hi there!!!(Hi)

I am in need of some urgent help... if anyone would be so kind as to help me i would soooo appreciate it!! (Bow)

I'm a homeschooled missionary in Mozambique, and have exams coming up next week, and i need to understand this one problem, but i can't!! Here it is:

How do i put the formulae P=50 + 2T and P=20 + 3T on a axis graph? i have axis Y and axis X.

If i must explain any further, i so would appreciate any help!!

THANK YOU!!

Use P as your dependent variable (Y) and T as your independent variable (X). Then your first equation has a P (Y) intercept of 50 and gradient 2, and the second equation has P (Y) intercept of 20 and gradient of 3.

Does that help?
• Sep 11th 2012, 09:19 AM