Linear Relationships B

Label this cartesian plane with the x axis, y axis, quadrant 1, quadrant 2, quadrant 3 and quadrant 4...

The formula for a straight line is:

y =​ ​ (a)   x +​ (b)  

where m =​ (c)  

and c =​ (d)  

If we are given two points, like (1 , 2) and (4 , 5),

what will the gradient be?

​ ​ (a)   = ​ (b)   = ​ (c)  

​ (d)   ​ (e)  

Name that slope!

Add three plot points:
(-4 , -3)

(-2 , 1)

(0 , 5)

Add three plot points
(-8 , 8)
(-4 , 6)

(0 , 4)

Using the rule
y = 2x + 3

what is y if x = 7

Using the rule
y = -6x + 1

what is y if x = 2