Question

If y is directly proportional to x and y = 20 when x=5 (connecting equation = y=4x)
1. draw the graph of y against x.

Answer 1

Given that, y is directly proportional to x.

Then, y ∝x

or, y = kx, where k is variant constant

When y = 20, x = 5, we can write

20 = 5k

or, k = 4

So we get the connecting equation:

y = 4x

Let us find set of points:

x : 0 1 2 3 4 5

y : 0 4 8 12 16 20

Now we plot this points on paper and joining them we get the required graph of y against x.

[ refer to the given attachment ]

Answer 2

Answer:

Y=k x 5

K=4

Step-by-step explanation: