Answer:

Step-by-step explanation:
Gradient



Equation of a line

- Sub one set of points into equation

The general form of a quadratic equation is that which is expressed in a form,
ax² + bx + c = 0
To write the equation in its general form, eliminate the decimal by multiplying the equation by 10. It now becomes,
3x² + 50x - 70 = 0
The value of b is therefore 50 and the answer is the second choice.
Answer:
Hope this helps out dude!
Step-by-step explanation: