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harkovskaia [24]
4 years ago
14

A+4b=-4, a+10b=-16 linear equation

Mathematics
1 answer:
ch4aika [34]4 years ago
3 0

Answer:

a=4, b = -2

Step-by-step explanation:

Use elimination: subtract two equations. you get -6b = 12, so b = -2. Substitute this into the first equation and get a -8 = -4, so a = 4

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Write an equation for the line that passes through coordinates ( 2,5) and (6,7)
Tema [17]

answer: y = 1/2x + 4

work:

let's use slope-intercept form to help model this equation:

y = mx + b

in slope intercept form, m = slope, b = y-intercept, and using those, any x and y values along the line should make an accurate equation using the form.

okay, so start by finding the slope. to do this, subtract the y values over the x values.

7 - 5 / 6 - 2

2 / 4

1 / 2

so, the slope is 1/2. let's plug this into our equation.

y = 1/2x + b.

next, we need to isolate b, so plug in x and y values and solve for b.

5 = 1/2(2) + b

5 = 1 + b

4 = b


so, b = 4. add that into the equation.

y = 1/2x + 4

so, we have the values we need, your equation is complete! i hope this helps, and have a great day! don't hesitate to ask if you need more help with this specific question! ♥ - eviezoom

7 0
3 years ago
Triangle QRS has vertices Q(-4,2),R(3,0), and S(4,3).
Dafna1 [17]

The coordinates of the vertices of \triangle Q'R'S' are Q'(x,y) = (0, -4), R'(x,y) = (7,-6) and S'(x,y) = (8, -3), respectively.

Vectorially speaking, a point is translated to another location on Cartesian plane by means of this expression:

A'(x,y) = A(x,y) + T(x,y) (1)

Where:

  • A(x,y) - Original point.
  • A'(x,y) - Translated point.
  • T(x,y) - Translation vector.

If we know that Q(x,y) = (-4,2), R(x,y) = (3,0), S(x,y) = (4, 3) and R'(x,y) = (7, -6)T(x,y) = (4, -6), then the coordinates of the vertices of the triangle Q'R'S' are:

Q'(x,y) = Q(x,y) + T(x,y)

Q'(x,y) = (-4,2) + (4,-6)

Q'(x,y) = (0, -4)

R'(x,y) = R(x,y) + T(x,y)

R'(x,y) = (3,0) +(4,-6)

R'(x,y) = (7,-6)

S'(x,y) = S(x,y) + T(x,y)

S'(x,y) = (4, 3) + (4, -6)

S'(x,y) = (8, -3)

The coordinates of the vertices of \triangle Q'R'S' are Q'(x,y) = (0, -4), R'(x,y) = (7,-6) and S'(x,y) = (8, -3), respectively.

We kindly invite to see this question on translations: brainly.com/question/17485121

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Look at the picture is it b or c ??
alexgriva [62]

Answer:

i would say B pls mark brainlest!

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