Question

1. use desmos.com to graph $y = f(x)$. sketch it below.

Explanation:

Step1: Identify the Function (Assume a Function, e.g., Linear)

Let's assume \( f(x) = 4x \) (a simple linear function for demonstration). To graph it, we find two points.
For \( x = 0 \), \( y = 4(0)=0 \), so the point is \( (0,0) \).
For \( x = 20 \), \( y = 4(20) = 80 \), so the point is \( (20,80) \).

Step2: Plot Points on the Grid

On the given grid, the x - axis has markings at 0, 20, 40, 60, 80 and the y - axis (wait, actually the x and y axes are labeled a bit unusually, but the horizontal axis (let's say x - axis) has 0, 20, 40, 60, 80 and the vertical axis (y - axis) has 0, 8, 16, 24... Wait, maybe the function is \( y = 4x \), so when \( x = 0 \), \( y = 0 \); \( x = 20 \), \( y = 80 \); \( x=- 20 \), \( y=-80 \).
We plot the points \( (0,0) \), \( (20,80) \), \( (- 20,-80) \) and draw a straight line through them.

Answer:

(The sketch would be a straight line passing through the origin (0,0), (20,80) and (-20, - 80) on the given grid. If a specific function was provided, the sketch would be adjusted accordingly. Since the function \( f(x) \) was not fully defined, a general linear function example is used for the sketch.)