tankee wrote:Future Academy wrote:tankee wrote:Kindly help with the following qn, thanks.

Without drawing the graphs, explain why the simultaneous equations

y = -2x + 5

y = 2x - 33

have no solution

Hi, is there any typo error in the question?

I am able to find the solution, which is x= 9.5 and y=-14.

......

likewise. But since it has been a while, I thought better seek help to be sure just in case it isn't a typo.

thanks.

A quick sketch of the graph will show that there is a solution.

I believe that it's a typo, and it probably is on either of the gradient/x-coefficient of the 2 equations.

The explanation should be because the gradient of the lines are the same (-2 OR 2; unable to determine due to typo), that means the 2 equations are parallel to each other, and therefore will never meet each other. => no solutions.