How do you find distance rate and time problems?

The formula for distance problems is: distance = rate × time or d = r × t. Things to watch out for: Make sure that you change the units when necessary. For example, if the rate is given in miles per hour and the time is given in minutes then change the units appropriately.

What is the formula of speed distance time?

You can find the average speed of an object if you know the distance travelled and the time it took. The formula for speed is speed = distance ÷ time.

What is formula for relative speed?

When two bodies move in opposite direction, then the Relative Speed = Sum of Speeds i.e for e.g. for a person sitting in a train moving with a Speed of 40 km/hr in the west direction, another train which is going towards east with a Speed of 40 km/hr, will appear to move at a Speed of (40+40) = 80 km/hr.

What does a direct proportion graph look like?

Two quantities that are in direct proportion will always produce a straight-line graph that passes through the origin. If the constant of proportionality is positive, the graph will have a positive gradient.

Does a graph have to start at zero to be proportional?

Graphing Other Linear Relationships Directly proportional relationships always pass through the origin (0,0). There are other linear relationships that do not pass through the origin.

What makes a relationship proportional?

Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the “constant of proportionality”.

What 2 things must be true for a graph to be proportional?

A graph of a proportional relationship is a straight line that intersects the point (0, 0), meaning when one quantity has a value of 0, the other must too.