14 - Straight Line Graphs Flashcards

1
Q

How would you represent x > 2 and x ≥ 2 on a graph

A

Draw a line along x = 2 and shade the right
for x > 2 make it dotted
for x ≥ make it full

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How do the gradients compare between two parallel lines?

A

They are equal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How do the gradients compare between two parallel lines?

A

They are negative reciprocals

e.g. 2x -> -1/2x

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How would you draw a line on a graph without plotting lots of points?

A

Using the x=0 y=0 method where you substitute x as 0 to find y at that point and vice versa. then join up the points.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How do you find the root of an equation?

A

Solve for x

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How do you find the y - intercept of an equation?

A

the c value

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How do you find the turning point of an equation?

A

complete the square of the equation. Your co-ordiantes will be ( -1b , c )

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How do you know if an equation has a minimum or maximum turning point?

A

Positive coefficient mean it has a minimum TP

Negative coefficient means it has a maximum TP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How do you work out the discriminant and what can it tell you?

A

(b² - 4ac)
D > 0 2 roots
D = 0 1 root
D < 0 No roots

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What does the area under a velocity time graph tell you?

A

The distance travelled

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How do you work out the acceleration at a point of a V/T graph if it is curved?

A

Draw a tangent that meets the curve at that point and work out the gradient of the tangent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly