Answer:
For Number 1, the answer would be just to put 1 times the value of whatever the x is in the y. For example, the first set of coordinates you could put in the first table are 2,2, or 3,3. For the second table, the coefficient, 3, in this case is what you multiply the x by to get your y in the table. The coefficient 3, also represents the slope. You also need to take into consideration the y intercept.
Step-by-step explanation:
For the first table, the coordinates should be y=1x. y=x basically means y = 1x.
For the second table, you need to multiply whatever your x value is, and subtract it by 1 to get the correct y value. 3x = to a slope of 3, meaning that is your constant that the x is multiplied by to get the y. The -1 is your y intercept. Represented in a line, it would be where the line crosses on the y axis or what point it hits. So, whatever you choose as your x, (you can put any) you need to multiply by 3 and subtract by 1.
Example : if your x is 2, you need to do 2 x 3, which is 6, and then subract 1 to get an answer that satisfies the equation of y = 3x - 1.
I hope this helped :)