Which ordered pair is a solution of the equation? 3x + 3y = -x + 5y

a. only (1,2)
b. only (2,4)
c. both (1,2) and (2,4)
d. neither

answer: slight chance that it will happen

step-by-step explanation:

correct answer:

b.(19,-2)

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.

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy