Use addition to solve the linear system of equations. y = 2x - 5 3x + 3 = 7 (2, -1) (2, 1) (-8, -21) (-1.6, -8.2)

(-8, -21)

Step-by-step explanation:

Given the two equations ...

you can solve them by adding the first equation to the second.

... (y) + (3x+3) = (2x-5) +(y)

... y + 3x + 3 = 2x -5 +y

Adding -y -2x -3 to both sides of the equation gives ...

... x = -8

Putting this value in the first equation gives ...

... y = 2(-8) -5 = -21

10 you would take 50/ .2

step-by-step explanation:

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.