Find the slope of each line y = -x -4ñ
1 answer:
Answer: The slope is -1
Step-by-step explanation:
1. By definition, the equation of the line has the following form:
Where m is the slope and b is the y-intercept.
2. The line given in the problem is .
3. Keeping on mind the form of the equation of the line, you can identify that slope and the y-intercept are:
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Step-by-step explanation:
27.7-14=Cost above 500 msg
13.7=C
E=number of Extra messages sent
C=0.1E
13.7/0.1=E
137=E
Total messages=T
T=500+E
T=500+137
T=637
Danielle sent 637 messages in September
Answer:
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Step-by-step explanation:
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Answer:
Step-by-step explanation:
-3x + 9y = -24
3x + 3y = 24
12y = 0
y = 0
-3x + 9(0) = -24
-3x = -24
x = 8
(8,0)
Answer:
a)7, b)-40
Step-by-step explanation:
a) 5(x-1)=30
=>5x -5=30
=>5x=30+5
=>5x=35
=>x=35/5
so, x=7
b)3(x+10)-2(x-5)=0
=>3x+30-2x+10=0
=>x+40=0
so,x=-40