Answer:
4. y+3=-1/3(x-9) 6a. 15x-y=0 6b. $150
Explanation:
4.
Point slope form formula: y-y1=m(x-x1)
Includes origin and point (9,-3)
m= y2-y1/x2-x1
-3-0/9-0= -3/9=-1/3
slope= -1/3
Since we already have the point (9,-3),
enter the information above into the point slope form formula.
y-(-3)=-1/3(x-9)
y+3=-1/3(x-9)
6.
3h--> $75
1h--> $15
a)
Standard form: Ax + By = C
m(slope)=15
y=15x
y-15x=0
-15x+y=0
15x-y=0
b)
10 hours of work---> $150