Please help, i will give each 10 points if it’s correct :)

Which number produces a rationale number when multiplied by 1/5

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

(05.03 mc) part a: explain why the x-coordinates of the points where the graphs of the equations y = 4x and y = 2x−2 intersect are the solutions of the equation 4x = 2x−2. (4 points) part b: make tables to find the solution to 4x = 2x−2. take the integer values of x between −3 and 3. (4 points) part c: how can you solve the equation 4x = 2x−2 graphically? (2 points)