It seems you are asking for a classification or identification of the given equations. Here are the equations categorized based on their types:
-
Linear equations:
- \( y = 3x + 13 \) (This is a linear equation in slope-intercept form).
-
Exponential equation:
- \( y = 53(0.67)^x \) (This is an exponential equation, as the variable \( x \) is in the exponent).
-
Quadratic equation:
- \( y = -9x^2 + x - 2 \) (This is a quadratic equation, as the highest exponent of \( x \) is 2).
Please insert these classifications into the appropriate inputs as prompted.