Solve equations given below using elimination method: x + y = 3 -3x + 2y = 1

x= 1; y=2

Step-by-step explanation:

x+y=3;

-3x+2y=1

To use elimination we must eliminate one of the variables. To do eliminate the x multiply the top equation by 3.

3x+3y=9

-3x+2y=1

Now add the 2 equations to eliminate

5y=10

y=2

Plugin y into another equation.

x+2=3

  -2=-2

x=1

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

it's a proportional graph.

step-by-step explanation:

8 x 5 = 40         (and you have -8x and -5y)

x= absiss

y= orderly

so you have a proportional graph.