Question

how to draw graph of 2x+3

Answer 1

f (x)=2x+3
now we know that f (x)=y
that means
y=2x+3 now plot the graph

and now it easy to calculate the different different value of x and y.

Answer 2

y = 2x+3

Put x = 0
Then,
y = 2(0)+3 = 3. Point : (0,3)

Put x = 1
Then,
y = 2(1)+3 = 5. Point : (1,5)

Plot these points (0,3) and (1,5) on graph paper
Join these points.
The line is y = 2x+3