Applying ratios and ptoportions today

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Which number line represents the solution set for the inequality -1/2x> 24?