Answer:
Equation 2: [tex]y = 8x[/tex]
Step-by-step explanation:
A linear function or equation is one in which the variables involved have no exponents other than 1.
the options are:
Equation 1: [tex]y = 2x^2 + 1[/tex]
Equation 2: [tex]y = 8x[/tex]
Equation 3: [tex]y = 5x^3 - 1[/tex]
Equation 4: [tex]y^2 = 4x - 1[/tex]
Equation 1 has a quadratic exponent, the same for Equation 4.
And Equation 3 has a cubic exponent.
So the only equation that is linear is the Equation 2, because there are no exponents other than 1 in the expression.
