Fill in x=1.7 gives f(1.7) = 0.5*1.7 ≈ 0.850
I think it is the third one. If it’s not the third one then it’s the first one.
In linear change, the two variables keep increasing or decreasing at the same speed.
Answer: answer in screenshots down below
Step-by-step explanation:
Equation of an ellipse
→having center (0,0) , vertex (
and covertex
and focus
is given by:

As definition of an ellipse is that locus of all the points in a plane such that it's distance from two fixed points called focii remains constant.
Consider two points (a,0) and (-a,0) on Horizontal axis of an ellipse:
Distance from (a,0) to (c,0) is = a-c = 
Distance from (-a,0) to (c,0) is = a + c = 
a -c + a +c
= a + a
= 2 a →(Option A )