How do you graph #y = 4x + 3# by plotting points?

Question

1490 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-02-26T13:32:51

See explanation

You basically select random values for #x# and calculate #y# for each by replacing the chose value of x in the equation #y = 4x +3#

So let's say we choose

#x=0#, then #y = 4(0) + 3 = 3#
#x=1,# then #y = 4(1) + 3 = 7#
#x=2,# then #y = 4(2) + 3 = 11#

You can carry on calculating more values if you wish, so now you can plot the following coordinates :

#(0, 3)#
#(1, 7)#
#(2, 11)#

And join them, you should obtain the following graph

graph{y=4x+3 [-20, 20, -10, 10]}