AnswersVT-SAT-MathWriting and Graphing Equations in Two Variables

Writing and Graphing Equations in Two Variables Answers

7 verified answers
1
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Suppose y varies directly with x. If y = –4 when x = 8, what is the equation of direct variation? | Complete the steps to write the equation of direct variation.

A
k = –4(8)
B
–4 = k(8)
C
8 = k(–4)
2
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Complete the steps to write an explicit formula that represents the sequence.

A
1
B
29/5
C
31/5
D
11
3

Suppose y varies directly with x. If y = –4 when x = 8, what is the equation of direct variation? | Complete the steps to write the equation of direct variation.

A
= –2y
B
= (–1/2)y
C
y = –2x
D
y = (–1/2)x
4

Suppose y varies directly with x. If y = –4 when x = 8, what is the equation of direct variation? | Complete the steps to write the equation of direct variation.

A
–32
B
–2
C
–1/2
5

Complete the steps to write an explicit formula that represents the sequence.

A
–5
B
–1/5
C
1/5
D
5
6

Complete the steps to write an explicit formula that represents the sequence.

A
f(n) = –5n + 11
B
f(n) = (–1/5)n+ (31/5)
C
f(n) = (1/5)n + (29/5)
D
f(n) = 5n+ 1
7

For the points in the table, does pressure vary directly with volume? If so, identify k and write an equation.

A
No, this is not a direct variation.
B
Yes, this is a direct variation with k = .
Option B
C
Yes, this is a direct variation with k = 1.
D
Yes, this is a direct variation with k = 3.

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