The equation for working out the slope of a linear line is: , where x and y are the coordinate pairs.
So just pick two of the purple dots on the graph and fill in the equation.
I'll pick the dot that's (-4, 1) and (4, -7).
Now I just do , which is just
when simplified.
Answer:
option-D
Step-by-step explanation:
we are given
Let's assume it is equal to 0
We can use quadratic formula
Suppose, we are given quadratic equations as
we can compare and find a,b and c
a=1 , b=2 , c=4
now, we can plug values
and we get
now, we can simplify it
and we get
