Literal equations
ax+4=12 for x

Find the value of the variable and the length of each secant segment

On a architect's drawing of a house, 1 inche representa 1.5

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle