Hi Mondrea;
b. (0,3) (2,6)
Let's first establish slope. This is the changeofy divided by changeofx...
(yy_{1})/(xx_{1})
(36)/(02)
3/2
A negative number divided by a negative number has a positive result.
3/2
Pointslope formula is...
yy_{1}=m(xx_{1})
We need to use one point. I randomly select the first...
y3=(3/2)(x0)
y3=(3/2)x
Let's add 3 to both sides...
y=(3/2)x+3
The formula is now in the format of...
y=mx+b
m is the slope.
b is the yintercept, the value of y when x=0.
Let's plugin the other point to verify.
y=(3/2)x+3
6=(3/2)(2)+3
6=(6/2)+3
6=3+3
6=6
It works!
1/30/2014

Vivian L.