vijaykramesh/khan-exercises — comment on commit 6a0e44b68d3adb6c6ddc23cb6338ffba1e6ac7b4
File: exercises/converting_between_point_slope_and_standard_form.html line 51
By smenks13:

Finally, here, you can change the sentence to "Multiply both sides by -1." and it will come out to the same equation. The data-if can stay as well.