Which point is on the line y = -2x + 3? (-2, -1) (3, 3) (3, -3) (-3, -9)

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

How many real-number solutions does the equation have? -4x^2 + 10x + 6 = 0 a. no solutions b. two solutions c. infinitely many solutions d. one solution

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.