step 1
find the equation of the line
where
x-------> numbers of light bulbs
y-------> the total cost in $
let
A (0,0) B (10,18)
slope m=18/10-----> m=1.8
step 2
with m=1.8 and the point A (0,0)
y-y1=m*(x-x1)------> y=1.8x
step 3
for x=1
y=1.8*1------> y=$1.8
therefore
the answer is
the cost of a single light bulb is $1.8
Your best bet is to make a table of the x and y values.
Then plug -2, -1, 0, 1, and 2 in for x, into the equation to get the y values. That's how you get your points.
Answer:
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Step-by-step explanation:
same question again
I really do not understand this question hope my answer is correct
2.90
im not completly shous though
-14.5
6.5 * -3 = -14.5
- * + = -
