Question

Which equation goes with the t-chart below?

x y
-2 10
-1 5
0 2
1 1
2 2

y= 2x^2-x+ 2
y=x^2- 2x+ 2
y=x^2- 2x- 2
y= 2x^2-x- 2

Answer 1

You can find the slope using the same formula as before:

\[\frac{y _{2} -y _{1}}{x _{2}-x _{1}}\]
use two points to solve for the slope, m

then use one of the points to solve for b (in the equation y=mx+b