If (4, b) is a point on the graph of y = 3x² + 4x, what is b?

**y = 3x² + 4x**

(4,b) is a point

b = 3(4)² + 4(4) {substituted 4 for x and b for y}

b = 3(16) + 16 {evaluated exponent and multiplied 4 by 4}

b = 48 + 16 {multiplied 3 by 16}

**b = 64**{added}

- Algebra House

- Algebra House