oak forge
yr 8
#graphs
mystic crest
For d it’s quite easy
If y = x
Then if y = 1 , x is also 1
That’s why the cords are always like (-1,-1) (2,2)
And you need to sub values for x
If y is -x it will go the other way crossing the graph so it’s the blue line
using y = mx+c we know the gradient is 3
So go right once and there is 3 up
tropic oar
y=x is always gna be linear so 1,1 , 2,2 etc
Y=-x is going to be linear in the reverse manner
Y=x+2 means that whenever x is a number, if you add 2 to it, it will be y for example x=1 therefore y=3