Answer:
-21
Step-by-step explanation:
If the equation of the line is

then
is the slope of the line and
is the y-intercept of the line.
In your case, the equation of the line is 
So, the slope of this line is
and the y-intercept is 
Answer:
a = 20
Step-by-step explanation:
7a + 2a + a − 9a = 20
Combine like terms
10a -9a = 20
a =20
Answer:
b>44
Step-by-step explanation:
12/5<b-8/15
switch sides b-8/15>12/5
multiply both sides by 15 15(b-8)/15>12*15/5
simplify b-8>36
add 8 to both sides b-8+8>36+8
simplify
b>44
Answer:
Algae
Step-by-step explanation:
I just know this I don't know if an explanation is needed..