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saul85 [17]
4 years ago
7

Plzz help see the attachment you will get 15 points

Mathematics
2 answers:
stepladder [879]4 years ago
5 0

Answer:

a, b & d

Step-by-step explanation:

y - 10 = 2x

Divide by 2

½y - 5 = x

½y = x + 5

Basically both equations represent the same line, so infinite solutions

(0,10) is a solution

10 - 10 = 2(0)

0 = 0

(1,12) is a solution

12 - 10 = 2(1)

2 =

(2,-6) is not a solution

-6 - 10 = 2(2)

-16 = 4

(-5,0) is a solution

0 - 10 = 2(-5)

-10 = -10

Makovka662 [10]4 years ago
3 0

Answer:

A, B, and D

Step-by-step explanation:

Let's put all the answer choices in for x and y in both equations:

A) x = 0, y = 10

10 - 10 = 2 * 0 --> 0 = 0, which works

1/2 * 10 = 0 + 5 --> 5 = 5, which works

So, A is correct

B) x = 1, y = 12

12 - 10 = 2 * 1 --> 2 = 2 which works

1/2 * 12 = 1 + 5 --> 6 = 6, which works

So, B is correct

C) x = 2, y = -6

-6 - 10 = 2 * 2 --> -16 = 4, which doesn't work

So, C is incorrect

D) x = -5, y = 0

0 - 10 = 2 * -5 --> -10 = -10, which works

1/2 * 0 = -5 + 5 --> 0 = 0, which works

So, D is correct

Thus, the answers are A, B, and D.

Hope this helps!

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4 years ago
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Answer:

y=-\frac{7}{2}x+8

Step-by-step explanation:

Given the equation

y\:=\:\frac{2}{7}x+9

comparing the equation with the slope-intercept form

y =mx+b            

Here,

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so the slope of the line is 2/7

As we know that the slope of the perpendicular line is basically the negative reciprocal of the slope of the line, so

the slope of the perpendicular line will be: -7/2

Therefore, the point-slope form of the equation of the perpendicular line that goes through (4,-6) is:

y-y_1=m\left(x-x_1\right)

y-\left(-6\right)=\frac{-7}{2}\left(x-4\right)

y+6=\frac{-7}{2}\left(x-4\right)

y+6-6=\frac{-7}{2}\left(x-4\right)-6

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3 0
3 years ago
Is x=-2 a positive slope
victus00 [196]

Answer:

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Step-by-step explanation:

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Best of Luck!

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Alexeev081 [22]

Answer:

1. 70.

2. 29.

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4. 289.

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The key to doing these is to split the polygons into  rectangles, triangles or trapezoids as appropriate.

For example, number 1 consists of a rectangle area 8 * 8 and another of   3* 2.

So the area = 64 + 6 = 70 unit^2.

2.  The area = sum of 3 rectangles 1*1 + 4*6 + 2*2.

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