3. [12 marks] Line 1 is defined by slope m = 2 and y-intercept c = −3. Line 2 passes through points (1, 4) and (5, 2).

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3. [12 marks] Line 1 is defined by
slope m = 2 and y-intercept c = −3.
Line 2 passes through points (1, 4) and (5, 2).
Find the equations of these two lines.
(b) Find the point of intersection of these two lines. Show
all working and give the exact answer.
(c) Are the lines perpendicular, parallel or neither? Give
reasons.