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Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.