AS5 - Straight line graphs

What does m equal

m is the gradient

What does o equal

the origin

Hoe do you calculate the gradient

y2-y1/x2-x1

What are the two ways of writing a straight line graph

• y=mx+c

• 0=ax+by+c

How do i find a straight line graphs equation with only one coordinate and the gradient

y-y1=m(x-x1)

What do parallels lines share

A gradient

What is the gradient of the line parallel to y=x

m=1/x

If two lines are perpendicular what does multiplying their gradients give you?

-1

How do you find the distance between two coordinates

Pythagoras aka √((x2-x1)² +(y2-y1)²)

How do you find the point at which two graphs would intersect

Simultaneous equations

When are two quantities directly proportional to eachother

When they increase at the same rate

Where will a directly proportional straight line graph cross

origin

What is a mathmatical model

It is an attempt to turn a real life problem into math’s, you do however have to make assumptions