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liraira [26]
3 years ago
11

The point-slope form of the equation of the line that passes through (–9, –2) and (1, 3) is y – 3 = (x – 1). What is the slope-i

ntercept form of the equation for this line?
y =1/2 x + 2
y = 1/2x – 4
y = 1/2x + 5/2
y = 1/2x – 7/2
Mathematics
2 answers:
bulgar [2K]3 years ago
8 0
(-9,-2) (1,3)
slope = (3 - (-2) / (1 - (-9) = 5/10 = 1/2

y - y1 = m(x - x1)
slope(m) = 1/2
(1,3)...x1 = 1 and y1 = 3
sub
y - 3 = 1/2(x - 1)
y - 3 = 1/2x - 1/2
y = 1/2x - 1/2 + 3
y = 1/2x - 1/2 + 6/2
y = 1/2x + 5/2 <=== slope intercept form
Effectus [21]3 years ago
4 0

Answer: y=\dfrac{1}{2}x+\dfrac{5}{2}

Step-by-step explanation:

Equation of a line passing through points (a,b) and (c,d) is given by :-

(y-b)=\dfrac{d-b}{c-a}(x-a)

Similarly, the equation of line passing through (-9, -2) and (1, 3) is given by :-

(y-3)=\dfrac{3-(-2)}{1-(-9)}(x-1)

(y-3)=\dfrac{3+2}{1+9)}(x-1)

(y-3)=\dfrac{5}{10}(x-1)

(y-3)=\dfrac{1}{2}(x-1)

(y-3)=\dfrac{1}{2}x-\dfrac{1}{2}

Add 3 both sides , we get

y=\dfrac{1}{2}x-\dfrac{1}{2}+3

y=\dfrac{1}{2}x+\dfrac{(2)(3)-1}{2}

y=\dfrac{1}{2}x+\dfrac{5}{2}

Hence, he slope-intercept form of the equation for this line :

y=\dfrac{1}{2}x+\dfrac{5}{2}

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Explanation
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6 0
3 years ago
An equation parallel and perpendicular to 4x+5y=19
mestny [16]

Answer:

An equation parallel to 4x + 5y = 19 would be y = -4/5x +12.

An equation perpendicular to 4x + 5y = 19 would be y = 5/4x + 10.

Step-by-step explanation:

The equation given represents a linear equation in Standard Form (Ax + By = C).  Lines that are parallel to each other go the same direction and don't touch, so their slopes must be the same.  However, lines that are perpendicular go in opposite directions and intersect, so their slopes must be the direct opposite of each other.  In order to find the slope, you must first convert from the Standard Form given to Slope Intercept Form (y = mx +b).  When you solve the given equation for 'y', you get: y = -4/5x + 19, where the slope = -4/5.  To make a parallel equation, simply keep the same slope and choose a different y-intercept ('b').  To make a perpendicular equation, take the direct opposide of your slope 5/4 (positive) and choose a different y-intercept.  

8 0
3 years ago
I NEED HELP 16 POINTS ON THE RIGHT ANSWER! Graph The following piecewise function:
Juli2301 [7.4K]
For the first one its (-4,0) and (3,0)

For the second one its (3,5) , (3,0) and (6,0)
7 0
3 years ago
On Saturday, 94,887 passengers
garik1379 [7]
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Reasoning: All you need to do is add the two passenger numbers for the two busses to get the total number of passengers on them on Saturday.
I hope that helps
4 0
2 years ago
Zoey made 6 1/2 cups of trail mix for a camping trip. She wants to divide the trail mix into 3/4 cup of servings. Twelve people
AlekseyPX

Answer:

No

Step-by-step explanation:

Given that:

Total number of cups of trail mix available for camping trip = 6\frac{1}{2}

Amount of one serving contains = \frac{3}{4} cups

Number of people at the trip = 12

To find:

Whether each person will be able to get the servings?

Solution:

Here, we can find the total number of servings by dividing the total number of cups of trail mix with the amount of one serving.

First of all, let us convert the mixed fraction into fractional number.

6\dfrac{1}{2} = \dfrac{6\times 2+1}{2} = \dfrac{13}{2}

Therefore, total number of servings available as per the given quantities:

\dfrac{\frac{13}2}{\frac{3}4}\\\Rightarrow \dfrac{13\times 4}{2\times 3} \\\Rightarrow \dfrac{26}{3}\\\Rightarrow \approx 8

So, With this type of servings Zoey will be able to serve only 8 people.

Therefore, there is not enough servings.

7 0
3 years ago
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