A parabola has equation y = 4x² + x + c. One x-intercept is -3. What is the value of c?

Ramsey

Ramsey

Answered question

2021-03-01

A parabola has equation y=4x²+x+c. One x-intercept is -3. What is the value of c?

Answer & Explanation

Jozlyn

Jozlyn

Skilled2021-03-02Added 85 answers

The x-intercept corresponds to the point (-3,0). Substitute this point to the equation and solve for c: 02=4(3)2+(3)+c
0=36+(-3)+c
0=33+c
-33=c
c=-33

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