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3 years ago

What is the slope of the line with equation y=9x

Mathematics

2 answers:

slava [35]3 years ago

4 0

The slope would be 9/1 using the formula mx+b in which m is the slope and b is the y-intercept

Anastaziya [24]3 years ago

4 0

y = –9x – 3 -------(1)
slope of a line is given by the equation

y = mx +c
here m = slope
compare the equation (1) with the standard form y = mx + c

we find slope (m) = -9
To find the y intercept put x = 0 in equation(1)
y = -9(0) - 3
y = -3
hence y intercept = -3

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GarryVolchara [31]

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

Read 2 more answers

What is the equation, in slope-intercept form, of the line

Sati [7]

Given:

Given that the graph of the equation of the line.

The line that is perpendicular to the given line and passes through the point (2,-1)

We need to determine the equation of the line perpendicular to the given line.

Slope of the given line:

The slope of the given line can be determined by substituting any two coordinates from the line in the slope formula,

$m=\frac{y_2-y_1}{x_2-x_1}$

Substituting the coordinates (-1,3) and (2,2), we get;

$m_1=\frac{2-3}{2+1}$

$m_1=-\frac{1}{3}$

Thus, the slope of the given line is $m_1=-\frac{1}{3}$

Slope of the perpendicular line:

The slope of the perpendicular line can be determined by

$m_2=-\frac{1}{m_1}$

Substituting $m_1=-\frac{1}{3}$ , we get;

$m_2=-\frac{1}{-\frac{1}{3}}$

simplifying, we get;

$m_2=3$

Thus, the slope of the perpendicular line is 3.

Equation of the perpendicular line:

The equation of the perpendicular line can be determined using the formula,

$y-y_1=m(x-x_1)$

Substituting $m=3$ and the point (2,-1) in the above formula, we have;

$y+1=3(x-2)$

$y+1=3x-6$

$y=3x-7$

Thus, the equation of the perpendicular line is $y=3x-7$

Hence, Option d is the correct answer.

3 0

3 years ago

A candy shop charges 8.99 a pound it's competitor charges 6.50 for 12 ounces which is a better deal and by how much

Gnom [1K]

Answer:

It is a better deal to do the 6.50 for 12 ounces

Step-by-step explanation:

The reason is because the is 16 ounces in a pound so you would do 8.99/16 and you get .56 per ounce but is you do 6.50/12 you get .54 per ounce which is a better deal.

Hope this helped!!

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3 years ago