Please help me I don't understand?

Question

find the equation, in the standard form, with all integer coefficients, of the line perpendicular to x-2y=24 and passing through (1,3).

Answer 1

Standard form is y = mx + b.

Perpendicular lines have a ratio of slopes equal to -1. Since the slope on the original equation in your question is -1/2, then the line perp. to it has to have a slope of 2....right?

Then, once you have the slope, you need a point (given in the question --- 1,3) and you can easily find the equation using the point-slope equation.