MATH HELP? Any help is greatly appreciated

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

Astraight water slide is 175 feet above ground and is 200 feet long. what is the angle of depression to the bottom of the slide?