
The equation of given line is ~

Let's use the point slope form of line to find the equation of given line ~
that is ~
Answer:
C. (16y + 7z)
Step-by-step explanation:
9y + 11z + 7y - 4z
1. Simplify the y's: 9y + 7y = 16y
16y + 11z - 4z
2. Simplify the x's: 11z - 4z = 7z
16y + 7z
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hope i helped!! ;)
Answer:
Multiple the first equation by -1
Step-by-step explanation:
After doing this you add the two equations together and follow the systems of equations as normal

Therefore y = 2
Sara worked 1 day last week
Joan worked for 20 hours last week
And Erin worked for 10 hours last week