exam Maths Puzzle Numerical Ability

Find all intercepts for the graph of the quadratic function
f(x) = 5x^2 - 19x + 12

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exam Other Question

Is the ordered pair a solution of the inequality?
(-5, 6); 6x + y < -8

Help please
I want to Thank you for your help. May I please have you show me how to do this problem - I am so confused and have tried to figure this out. Thank you again! What am I doing wrong