exam Maths Puzzle Numerical Ability

Could you please help me with these equations?

Graph the function
F(x)= -5x-1

Find the slope and the y-intecept
5-1/4y=9x

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exam Other Question

Consider triangles ABC and DEF. side a is congruent to side f. Angle A is congruent to angle F. Angle B is congruent to angle E. What postulate or theorem can be used to prove that the two tirangles are congruent? two vertices of an octagon lie at (2, -2) and (11,10).
find the perimeter of the octagon.