Need asap
will upvote!
i think it's a but i'm not sure
lines a and b are represented by the equations given below:

line a: x + 2y = 3
line b: x + y = 3

which statement is true about the solution to the set of equations?
there are infinitely many solutions.
there are two solutions.
there is one solution.
there is no solution.

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?