exam Maths Puzzle Numerical Ability

YVARIES JOINTLY AS THE SQUARE OF X AND THE SQUARE ROOT OF Z, AND Y=100 WHEN X=2 AND Z=25. FIND Y WHEN X=5 AND Z=16.

Read Solution (Total 0)

exam Other Question

Identify the axis of symmetry, create a suitable table of values, and sketch the graph. I am having difficulty creating the table.

y=x^2-5x+3

Thank you so much for any help you can give me. Now i have an equation which is :
3x = 3x + 5
which I know has no solution to it,
now whereas the equation 7x + 8 = 8 has zero as a solution.

What is the difference between a solution of zero and no solution?