exam Maths Puzzle Numerical Ability

Which of the following points is included in the graph of : -7y+3x<0?

a. (-6,-3)
b. (3,-2)
c. (7,4)
d. (5,-3)

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exam Other Question

Find the slope and the y-intercept.
y = 4x - 2

The answer I came up for this one is 2 for the slope. Is this correct? If not could you show me what I did wrong and explain how to find the slope and y-intercept. Thanks for your time and help.
Could you please help me with this problem:
(3-5i)-(2-7i) Write the expression in the form a+bi, where a and b are real numbers. Thank you!