For the table to the​ right, represent the relationship using​ words, an​ equation, and a graph. Then determine whether the relationship is a linear function.\

x,0,1,2,3

Y,4,11,18,25

Represent the relationship using an equation.
y=
enter your response here
​(Simplify your answer. Type an expression using x as the​ variable.)

The equation representing the relationship is y = 7x + 4.