Mathematics - Linear Relationships Formulas

+ Hyperbolas, Parabolas, Exponentials

Gradient (m)

rise/run

• rise is on the y-axis

• run is on the x-axis

Equation of a straight line

y = mx + c

• where m is gradient

• c is the y-intercept

• x is the independant variable

Gradient of a line between two points

How to know if a point does not lie on the line [y=mx+c]

sub in each x and y value (x,y) until the y value ≠ mx+c

Parabola

y = x²

• less than 1 will be a wide parabola, more than 1 will be a thinner parabola

• +1 will move it up, -1 will move it down.

Hyperbola