Section 3: Graphs Flashcards
(9 cards)
When plotting quadratics using a table of values
Substitute each x value to get y value
Plot and join with smooth curve
What is the equation for circles on a graph
X² + y² = r²
In distance time graphs the gradient equals
The speed
In velocity time graphs the gradient equals
Flat sections equal
Acceleration
A steady velocity
The gradient of a graph can represent
The rate
How to estimate rate at a given point
Draw a tangent off the point given and find gradient
How to find the equation of a line with 2 points
Find the gradient by doing chnage in y over change in x
Find the y intercept by substituting the coordinates of one point into the equation
How to find average acceleration on velocity time graph
Change in velocity ÷ change in time
Venn diagram symbols
A u B = everything inside the circles
A n B = the intersection of sets a and b
(A’) = all members not in a
