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3 years ago

What’s an equation of the line that has a y intercept of -2 and a slope of 5

Mathematics

2 answers:

Alexxx [7]3 years ago

8 0

Answer:

y = 5x - 2

Step-by-step explanation:

Hello, V,

In the slope-intercept form of the equation of a straight line, replace the y-intercept (b) with -2 and the slope (m) with 5:

General form: y = mx + b

This case: y = 5x - 2 (answer)

stira [4]3 years ago

6 0

y = mx + b

m = slope

b = y-intercept

Given: m = 5 and b = -2

Answer:

y = 5x - 2

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In a certain function, y varies directly with x. If y = 6 when x = 8, find x when y = 9.

Hatshy [7]

If y = 6 when x = 8, then value of "x" when y = 9 is equal to 12

<u>Solution:</u>

Given that , In a certain function, y varies directly with x

And x = 8 when y = 6,

We have to find what will be the value of x when y = 9

Now, from the given information,

$\begin{array}{l}{y \alpha x} \\\\ {y=c x \rightarrow(1)}\end{array}$

where c is the proportionality constant

$\begin{array}{l}{\text { Now, substitute } x=8 \text { and } y=6 \text { in }(1)} \\\\ {\rightarrow 8=c(6) \rightarrow c=\frac{8}{6}} \\\\ {\rightarrow c=\frac{4}{3}} \\\\ {\text { Then, }(1) \rightarrow x=\frac{4}{3} y} \\\\ {\text { So, when } y=9} \\\\ {\rightarrow x=\frac{4}{3}(9)} \\\\ {\rightarrow x=4 \times 3} \\\\ {\rightarrow x=12}\end{array}$

Hence, x value is 12 when y value is 9

3 0

3 years ago

HELP A KID IN NEED

Stella [2.4K]

Answer:

8z+5

Step-by-step explanation:

Let's split the expression into two terms- z and... not z :)

3z+5z=8z

Why? it's just 3+5 with z tacked on the end

14-9=5

simple math :)

put it together to get

8z+5

all done!

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2 years ago

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sergiy2304 [10]

Answer: C. 2 and 3 only

Step-by-step explanation: i did the same quiz

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2 years ago

A coin contains 1.25 grams of nickel and 3.75 grams of copper, for a total weight of 5 grams what percentage of the metal in coi

Citrus2011 [14]

3.75/5 = .75
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3 years ago

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Achemistry journal requires that all new research papers be peer reviewed by other scientists before they are published. This

gavmur [86]

Answer:

The reviewers can determine the experiment's feasibility.

Step-by-step explanation:

First of all this isn't math but the answer is between A & B, typically it is checked for mistakes that could lead to it being flawed. From this It is most likely A due to it being a paper and not an actual experiment, they would be looking for if it COULD happen, not if it WILL happen. They wouldn't add their own findings to someone elses paper, and it typically isn't for funding.

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2 years ago