write an eqation for

Question

x ; -1, 0, 1, 2
y; 4, 2, 0,-2
y=-2x+2
y=5x+2
y=5/2x+2
y=-3x+2

Answer 1

There are multiple equations that fit the given data points. Here are a few possibilities:

1) Using the first two data points:
y = -2x + 2

2) Using the last two data points:
y = -3x + 2

3) Using the first and last data points:
y = (-2/3)x + 0

4) Using all four data points:
y = (5/2)x + 2