The Purplemath Forums

Hi :wave: I need help with slope.My math teacher gave us a graph with the x-intercept and y-intercept already graphed. I just need to find out how to get the equation for the slope. I got the formula (I think). It's y=mx+b , right? Well, if it is, what do the variables represent? An example problem...

THANKS!

HELP PLEASE & EXPLAIN

A carload of campers leaves for a lake at 8 AM. a second carload leaves at 8:30 AM and drives 10 mph faster over the same road.
if the second car overtakes the first at 10:30 AM , what's the average speed of each car?

R x T= D

x-int:____________
y-int:____________
slope:___________
eq:_____________

Okay
So
2 pts on the graph
a-- (0,-3)
b-- (2,1).


AFTER THAT
I KNOW THAT
x:____
y: -3
slope:_____
eq:______
okaaayyyy? please help i suck at this rlly bad!