Question

State whether the system of equations has one solution, no solutions, or infinite solutions
a. y = x -3
-x + 3y = -9

Answer 1

if you would draw a line for each of these functions, how many times do you think they would cross each other?

Answer 2

I have absolutely no cue. Sorry.

Answer 3

clue*

Answer 4

@agent0smith he can explain this! with his smarticles:)

Answer 5

Two straight lines will always cross once, unless they are parallel, than they will cross never.

Answer 6

so all you have to do, is to see if they are parallel or not, if they are not, than they will cross, once.

Answer 7

You can either draw a graph, or try to solve the system to decide

y = x -3
-x + 3y = -9

use substitution since you know y is equal to x-3, so replace the y in the second equation:
-x + 3(x-3) = -9

see if you can solve that for x

Answer 8

See i know smarticles when i see it:)