exam Maths Puzzle Numerical Ability

? help
Write in slope-intercept form the equation of the line passing through (1,3) and (-5,-1). Show that this line is perpendicular to the line y=-3/2x+17. thanks

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Question

a) Given PRS and PQR are triangles. QR = 30 cm. Find PS.
b) PTQ, PMR and PMS are all triangles. PS = QR while PQ = RS. PQ = 24 cm while RS = 24 cm. Find PT.


Please help to solve this question. Thank you.
I need help please I am not sure but I believe the answer -6/0 which I believe is undefined. Am I right? Thanks so much for your help.
Perform the indicated operation.


14-20
_________

(4)(3)-12