Answer: 
Step-by-step explanation:
Remember the point-slope equation which is 
where
is your <u>point</u> and 
is your <u>slope.</u>
<u />
Given that we substitute what you have:
Minus and minus give us positive:
Multiply slope into the parenthesis:
Calculate it:
Isolate the 
by subtracting 10 from both sides:
Your final equation is:
Hope this makes sense!
And here's the graph to prove that the line actually goes through the point 
:
Answer:
,
Step-by-step explanation:
ECD=90 ECD=x+5+3x-7=4x-2, 4x-2=90, 4x=92, 4x/4=92/4, x=23
a) 23
ECH=x+5, 23+5=28, ECH=28
b)28
HCD=3x-7, 3(23)-7, 69-7=62 HCD=62
c)62
GCF & ECH are vertical angles, GCF=28
d) 28
ECF=180, 180-28(GCF)=152, ECF=152
e) 152
DCF=90, 90+28(GCF)=118
f) 118
