exam Maths Puzzle Numerical Ability

I don't get this graphing thing - please help!

Graph the equation; calculate the slope, x-intercept and y-intercept and label the intercepts on a graph. 7.1x - 3.9y = 1.4

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exam Other Question
El Segundo High School put on their annual musical. the students sold 650 tickets for a value of $4375. If orchestra seats cost $7.50 and balcony seats cost $3.50, how many of each kind of seats were sold? find f(x)+g(x)and f(X)-g(X).simplify your answer.

1.) f(x)=3x^3-2x^2+5x-1,g(x)=x^2+7x-1

2.)f(x)=4x^2/3,g(x)=3x^2/3

3.) f(x)=2x^3-3x+4,g(x)=x^2+5x-1

4.) f(x)1/2x^3/4,g(x