Question

Pls. Help me answer #3.

Answer 1

The answer is y=1/2x

Answer 2

Answer:

First find the gradient (m).

• Pick any two points on x axis and their corresponding points on y axis in this format (x,y).
• point 1 (10,5) and point 2 (20,10)
• Gradient = (y2-y1) /(x2-x1)
• = (10-5)/(20-10)
• =5/10
• Gradient (m)=1/2

Now that you know gradient, solve using either of the points you picked as shown below: Note pick a third in letters not numbers example point 3 (x,y)

• Lets use point 1 (10,5) and point 3 (x,y).
• Gradient = (y-5)/(x-10) : Note we already know gradient is 1/2
• so, 1/2 = (y-5) / (x-10)
• Rearranging and simplifying: y-5 = (1/2)(x-10)
• y-5=(1/2 x) - 5
• Add 5 to both sides
• y-5+5=(1/2x)-5+5
• y=1/2x+0

Final answer y=1/2x or y=0.5x

Step-by-step explanation: