Answer and shortly explain these practice questions that I don't understand, please. Thank you.

l4. {Ll [{1} Find the rate ofehange (slope) for this twovariable equation: 4y = 8x a}1 b)2 e}3 (1)4 e} None of the above 15. {Ll 11} Find the rate ofehange (slope) for this twovariable equation: 5y = I + 5 a} - 5 In); e}; :1); e} None of the above 18. (L1 12) Tell the slope and y-intercept of the graph of this linear equation: -y = =x + 3 a) slope: -=; y-intercept: (1, -4) b) slope: - -; y-intercept: (4, 1) c) slope: - y-intercept: (0, -3) MIw UIIN d) slope: - )-intercept: (2, -2) e) None of the above 19. (L1 12) Find the slope (rate of change) of line M, using the graph below. a) A b) M (-3,2) (3,1) C) -6 -5-4-3-2-1 X d) (0,-4) e) None of the above