Question

Graph y=3x+4

Answer 1

ahh no @cheeta14 i wont continue giving you the answer if you dont best response me

Answer 2

plug in any value for x,

if x=1

\(\LARGE\color{blue}{ \bf y=3x+4}\)
\(\LARGE\color{blue}{ \bf y=3(1)+4}\)
\(\LARGE\color{blue}{ \bf y=3+4}\)
\(\LARGE\color{blue}{ \bf y=7}\)

So, you know that when x=1, y=7 which gives us the coordinate of (1,7)


NOW.... if x=-1

\(\LARGE\color{blue}{ \bf y=3x+4}\)
\(\LARGE\color{blue}{ \bf y=3(-1)+4}\)
\(\LARGE\color{blue}{ \bf y=-3+4}\)
\(\LARGE\color{blue}{ \bf y=1}\)

So, you know that when x=-1, y=1 which gives us the coordinate of (-1,1)

So you have 2 coordinates (1,7) and (-1,1) plot each coordinate (draw each dot where it is supposed to be) and connect the 2 with the line.

Answer 3

you can choose to plug any number for x, it doesn't matter, b/c the line won't change .

Answer 4

This tells us two things. Our slope is 3 and our y intercept is -4.
This tells us that we need to start at (0,-4).
Plot that point.
Since our slope is 3 (3/1), move up 3 and right 1.
This you will end up at point (1,-1).
Connect these two points in a straight line, and you have graphed your line.

Answer 5

you can take two points on the line as follows:
Putting x=0,y=4 (0,4)
and y=0,x=-4/3 (-4/3,0)
Plot these points on the graph and draw them using the straight line....

Answer 6

*i mean join them via straight line