One Step
X+6=12
X=6
2n-4=16
n=10
2c+4=4c
c=2
What two things are needed to make a graph proportional?
1. A straight line
2. Goes through the origin
What is the slope intercept equation?
y=mx+b
8x=72
x=9
x/13+3=26
x= 299
3(m+4)=8
m= -1.33
Not proportional - Not a straight line
How do we find slope using two points?
m= y2-y1/x2-x1
x/12=144
x= 1,728
8m+(-2)=48
m= 6.25
14(v-5)=7
v= 5.5
Is this proportional? If not, why?
No - It doesn't go through the origin
Find the slope of (16, -2) and (3, 24):
m= 26/ -13
7n=72
n= 10.29
x/99-(-23)=1
x= 2,376
17(2-m)=3
m= 1.82
Find the unit rate: Is this proportional?
Unit rate:4 and yes
Find the slope:
y= 2/4x-2
z/32=9
z= 288
26z+(-25)=50
z= 2.88
-8(3w-(-2))=6w
w= -0.53
What is the unit rate? Is this proportional?
It is not proportional.
Find the slope:
y= 2/1x+3