Short Answer

$$\text { Suppose that } \mathrm { C } = 0 \text { in the equation } \mathrm { Ax } { } ^ { 2 } + \mathrm { Bx } + \mathrm { Cy } { } ^ { 2 } + \mathrm { Dy } + \mathrm { E } = 0 \text {. What kind of graph does this equation have? }$$