Shontell spends $7 a month plus $0.10 per minute. Determine whether the cost per month is proportional to the to the number of m
inutes by graphing on the coordinate plane
2 answers:
Answer:
Not proportional
Step-by-step explanation:
Shontell spends $7 a month plus $0.10 per minute.
Let Shontell uses x number of minutes and total $y
Fixed amount = $7
Variable amount = $0.10 per minutes
In 1 minutes spends = 0.10
In x minutes = 0.10x
Total spends in a month, y = 7 + 0.10x
This is linear function not proportional equation.
Proportional equation, y=kx equation must passes through origin.
So, This is not situation of proportional equation. This is linear equation.
Now graph on coordinate plane
- x-axis represents number of minutes uses in a month.
- y-axis represents total cost spends in a month
Please find attachment for graph.
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Answer: C. n = 4r + 50
Step-by-step explanation:
The equation is in the form: y =mx + c
y is the number of flowers used.
x is the row number.
Solving for m. Pick any two points. (1, 54) and (2, 58)
m = (Y₂ - Y₁) / (X₂ - X₁)
= (58 - 54) / (2 - 1)
= 4
Solving for c. Use a point to fill up the formula and find c; (1, 54)
y = mx + c
54 = 4 * 1 + c
c = 54 - 4
c = 50
Formula will therefore be;
y = 4x + 50
or;
n = 4r + 50
