Question

What is the linear term of 6x^2-4x+25

Answer 1

4x

Answer 2

the Future Maths Prof is on track. this is a quadratic equation because it has x^2 in it as the highest power. quadratic equations are curves. because of the x^2 component, you get a symmetry by virtue of the fact that squaring takes out the minus sign.

but as well as the 6x^2, it also has a linear part. if you plotted y = -4x+25, you would get a straight line with gradient -4 which crossed the y axis at y= 25.

the effect of this is to shift the core quadratic expression about a bit.

Answer 3

looks fine Prof, but you do need to get the "MINUS" sign in there!

Answer 4

..it is in there

Answer 5

not in your first response from 3 hours ago.

your last one was perfect!