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3 years ago

Graphing linear equations

Mathematics

1 answer:

ella [17]3 years ago

6 0

Answer:

To ensure uniformity on an exam

To test whether you can distinguish between the two formats

Step-by-step explanation:

Standard form is when a straight line equation is rearranged in the form:

$ax + by = c$

Therefore y=2x+4 in standard form is

$2x - y = - 4$

The slope-intercept form is when a a straight line equation is written in the form:

$y = mx + c$

where m is the slope and c is the y-intercept.

The given equation is

$y = - \frac{1}{2} x - 5$

This is already in slope-intercept form:

The standard form and slope-intercept forms are just formats.

Your instructor may restrict you to leave your answer in one of these formats maybe for uniformity on a test.

You may also decide to rewrite an equation in slope-intercept form, so that you can easily identify the slope and y-intercept easily for graphing purpose.

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St. Augustine grass can grow at the rate of 4 over 7 centimeter per week.

kotegsom [21]

Given, the rate of growth of St. Augustine grass is $\frac{4}{7}$ cm per week.

We have to find the number of weeks that the grass grow to $\frac{12}{7}$ cm.

Let's take the number of weeks be x.

In 1 week the grass grow = $\frac{4}{7}$ cm

So in x weeks the grass grow = $(\frac{4}{7}) (x) =\frac{4x}{7}$ cm

So we can write,

$\frac{4x}{7} =\frac{12}{7}$

To solve it for x, first we will move 7 to the right side by multiplying it to both sides. We will get,

$(\frac{4x}{7}) (7) =(\frac{12}{7})(7)$

$4x =(\frac{12}{7})(7)$

$4x = 12$

Now to get we will move 4 to the right side by dividing it to both sides. We will get,

$\frac{4x}{4} =\frac{12}{4}$

$x = 3$

So we have got the required answer.

After 3 weeks the grass grow $\frac{12}{7} cm$ .

3 0

3 years ago

2/3 - 6/7 - 3/10 equal?

Sedaia [141]

-103/210

hope this helps

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3 years ago

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An executive in an engineering firm earns a monthly salary plus bonus of 5700 dollars. If she earns a total of 91400 dollars per

Ray Of Light [21]

Answer:

Step-by-step explanation:

From the problem statement, we can setup the following equation:

$12S + 5700 = 91400$

where $S$ is the monthly salary. Solving for $S$ will give us the answer:

$12S = 85700$

$S = 7141.67$

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3 years ago

What is the median of the data shown below?

fredd [130]

Answer:

Step-by-step explanation:

You need to add the two middle numbers then divide them by two.

Hope this helps.

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3 years ago

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How does the graph change between point A and point C?

il63 [147K]

Answer:

The answer is option D. Best of luck

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2 years ago

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