Question

When does a pair of simultaneous equations have no solution?

Answer 1

`\sf {Hello!}`

A pair of simultaneous equations have no solution when they have the same slope but different y-axis.

`\sf For`
`\sf instance`,
`\mathrm{a_1/a_2 = (b_1/b_2) \\eq (c_1 / c_2)}`