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Afina-wow [57]
3 years ago
12

What is an equation of the line that is parallel to y=9-4x and passes through (0,7)

Mathematics
1 answer:
Maslowich3 years ago
4 0

Answer:

y= -4x+7

Step-by-step explanation:

The slope of the given line is M=-4

Parallel lines have the same slope.

The parallel line ALSO has slope M=-4.

It passes through (0,7) <--- just happens to be the intercept since x=0 and y=7

y = Mx + B

7 = (-4)(0) + B

B = 7

y = -4x + 7.

You might be interested in
QuestionA local road rises 30 feet for every 483 feet of highway. What is the slope of the highway?
max2010maxim [7]

The slope can be found by the "rise over run", that is, is the change in variable y divided by the change in variable x.

In this question,

\begin{gathered} slope=\frac{rise\text{ in the road}}{run\text{ in highway}} \\  \end{gathered}

Substituting the values:

\begin{gathered} slope=\frac{30}{483} \\ slope=0.06\text{ feet per feet of highway.} \end{gathered}

Answer: 0.06 feet per feet of highway.

3 0
1 year ago
5 less than one fourth of x is y
dimulka [17.4K]

y = 1/4x - 5

Hope this helps!

6 0
4 years ago
7x/3+2=-15 solve please!
marta [7]

How to solve your problem

Topics: Algebra, Polynomial

7

3

+

2

=

−

1

\frac{7x}{3}+2=-1

37x​+2=−1

Solve

1

Find common denominator

7

3

+

2

=

−

1

\frac{7x}{3}+2=-1

37x​+2=−1

7

3

+

3

⋅

2

3

=

−

1

\frac{7x}{3}+\frac{3 \cdot 2}{3}=-1

37x​+33⋅2​=−1

2

Combine fractions with common denominator

7

3

+

3

⋅

2

3

=

−

1

\frac{7x}{3}+\frac{3 \cdot 2}{3}=-1

37x​+33⋅2​=−1

7

+

3

⋅

2

3

=

−

1

\frac{7x+3 \cdot 2}{3}=-1

37x+3⋅2​=−1

3

Multiply the numbers

7

+

3

⋅

2

3

=

−

1

\frac{7x+{\color{#c92786}{3}} \cdot {\color{#c92786}{2}}}{3}=-1

37x+3⋅2​=−1

7

+

6

3

=

−

1

\frac{7x+{\color{#c92786}{6}}}{3}=-1

37x+6​=−1

4

Multiply all terms by the same value to eliminate fraction denominators

7

+

6

3

=

−

1

\frac{7x+6}{3}=-1

37x+6​=−1

3

(

7

+

6

3

)

=

3

(

−

1

)

3(\frac{7x+6}{3})=3\left(-1\right)

3(37x+6​)=3(−1)

5

Cancel multiplied terms that are in the denominator

3

(

7

+

6

3

)

=

3

(

−

1

)

3(\frac{7x+6}{3})=3\left(-1\right)

3(37x+6​)=3(−1)

7

+

6

=

3

(

−

1

)

7x+6=3\left(-1\right)

7x+6=3(−1)

6

Multiply the numbers

7

+

6

=

3

(

−

1

)

7x+6={\color{#c92786}{3}}\left({\color{#c92786}{-1}}\right)

7x+6=3(−1)

7

+

6

=

−

3

7x+6={\color{#c92786}{-3}}

7x+6=−3

7

Subtract  

6

6

6

from both sides of the equation

7

+

6

=

−

3

7x+6=-3

7x+6=−3

7

+

6

−

6

=

−

3

−

6

7x+6{\color{#c92786}{-6}}=-3{\color{#c92786}{-6}}

7x+6−6=−3−6

8

Simplify

Subtract the numbers

7

=

−

9

7x=-9

7x=−9

9

Divide both sides of the equation by the same term

7

=

−

9

7x=-9

7x=−9

7

7

=

−

9

7

\frac{7x}{{\color{#c92786}{7}}}=\frac{-9}{{\color{#c92786}{7}}}

77x​=7−9​

10

Simplify

Cancel terms that are in both the numerator and denominator

=

−

9

7

x=\frac{-9}{7}

x=7−9​  

Solution

=

−

9

7

4 0
3 years ago
In​ 1990, the average math SAT score for students at one school was 498. Five years​ later, a teacher wants to perform a hypothe
mojhsa [17]

Answer:

A. Fail to reject the claim that the average math SAT score is 498 when in fact it is not 498.

Step-by-step explanation:

Type II Error:

A type II error happens when there is a non-rejection of a false null hypothesis.

In this question:

The null hypothesis is H0​:μ=498.

Since there is a type II error, there was a failure to reject the claim that the average math SAT score is 498 when in fact it is not 498, and thus, the correct answer is given by option A.

6 0
3 years ago
What’s the answer to this ?
Rasek [7]

Answer:

Step-by-step explanation:

0.25=\frac{x}{140} \\140*0.25=\frac{x}{140}*140\\35=x

1st box: 140

2nd box: 140

3rd box: 35

3 0
3 years ago
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