Question

Any nerds want to help out? How to you graph equations like for example:
y=2x-7 Equation 1
y=-4x+5 Equation 2
Thank you so much!!!

Answer 1

To graph any straight line, you just need two points

To get any point, you plug in any x value to get a corresponding y value

For instance, if x = 0, then

y = 2x - 7

y = 2*0 - 7

y = 0 - 7

y = -7

which tells us that the point (0, -7) is on the line y = 2x - 7

Answer 2

Nah I'm not a nerd. I'm a gangster. I'm also a bike junkie. I also smoke a pack a day.

Answer 3

you repeat that process for some other x value (say x = 1) to get another point

Once you have your two points, plot them and draw a straight line through them.

Answer 4

Confusing but Thanks:0)

Answer 5

where are you lost

Answer 6

It just doesn't seem like what we did in math

Answer 7

how did you graph? there are multiple ways to do it

you could start with the y-intercept, then use the slope to find another point

Answer 8

plot points.

Answer 9

to graph y = 2x - 7, you start with the y-intercept (0, -7)

then you go up 2 and over to the right 1 to get the next point (1,-5)

so you now have two points to draw a straight line through

Answer 10

The section in my math book is titled Solve Linear Systems by Graphing

Answer 11

So is what is 7? the y?

Answer 12

do you see how I'm getting this though? hopefully you see how to graph any linear equation

Answer 13

the -7 is the y-intercept, which is the point (0, -7)

Answer 14

@jim_thompson5910 nailed it on the head.

Answer 15

Okay so why is there still a y in the equation if it is -7

Answer 16

what do you mean

Answer 17

Forget the question...:)

Answer 18

you sure?

Answer 19

what I did when i plugged in x = 0 to get y = -7 shows that we have the point (0, -7) on the line y = 2x - 7

Answer 20

thanks for your help!!!! greatly appreciated....

Answer 21

ok yw