exam Maths Puzzle Numerical Ability

write the function form of 4x-2y=18

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ELLIPSE

Reduce to standard form then find the coordinates of the center,the foci,the ends of the major and minor axes and the ends of each latus rectum.Sketch the curve.

a) 1
can someone please help me with this problem:

Evaluate the function at the given value of the independent variable and simplify.

f(x) = -5x + 8; f(-3)

a. 23
b. -9
c. 3
d. 7