exam Maths Puzzle Numerical Ability

Determine the equation of the axis of symmetry for the parabola whose x - intercepts are (-3, 0) and (1,0).

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exam Other Question

Write the equation of the line that passes through point (0, -9) with a slope of 6.

i wrote one but i am not sure that i got this correct can you help? thank you graph Y = 1/4x + 2 ???