What is the solution to the system of equations?

use the linear combination method.

{x+y=10
x+2y=4

x = 16 and y = -6

Step-by-step explanation:

x + y = 10

x + 2y = 4

Multiply the first equation by -1 on both sides. Rewrite below it the second original equation.

-x - y = -10

x + 2y = 4

Add the two equations above.

      y = -6

Now we solve for x. Multiply the first original equation by -2 on both sides and write the second original equation below it.

-2x - 2y = -20

  x + 2y = 4

Add the two equations above.

-x = -16

Divide both sides by -1.

x = 16

Solution: x = 16 and y = -6

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb