hmm,
slope is 21/28=3/4
y+7=3/4(x+7)
y=3/4x-7/4 is da equation
test each
A.
x=5
y=3/4(5)-7/4
y=15/3-7/4
y=8/4
y=2
nope, not A
B
we saw from previous that this works
C.
y=(3/4)17-7/4
y=51/4-7/4
y=44/4
y=11
yep
D.
y=(3/4)(4)-7/4
y=3-7/4
y=5/4
nope
E.
y=(3/4)33-7/4
y=99/4-7/4
y=92/4
y=23
yep
answers are B, C, E
