Which of the following has a graph that is a straight line Equation 1: y=4x^3+6
Equation 2: y=5x-4.5
Equation 3: y^2=x-1
Equation 4: 2x^2+6

Equation 2 because there is no square on any variables

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.

21

step-by-step explanation: