1) which equation represents the relationship shown in the table below?

Question

x: 0, 1, 2, 3
y: -3, -1, 1, 3
A: y=-x-3
B: y=x-3
C: y=2x-3
D: y=-2x+3
2) in a relationship between variables, what is the variable called that changes in response to another variable?
A: function
B: input function
C: independent variable
D: dependent variable

Answer 1

since y changes by 2 for each change of 1 in x, look for something like
y = 2x
But since 2*0 = 0, and you want y(0) = -3, the answer is
y = 2x-3
You could have tried all four choices in about 2 minutes if you were unsure.

"in response" means it depends on the other, right?