exam Maths Puzzle Numerical Ability

i need graph examples for #2 #5 on page 544..

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exam Other Question

I have been given the roots 2+sqrt7 and 2-sqrt5. How do I find the "quadratic equation with integral coefficients"?

I know that the formula is (x-r1)(x-r2)= 0 Write the equation of the line passing through each of the given pairs of points. Write your
result in slope-intercept form, where possible.

(-1, 3) and (4, -2)