Identify the equation whose graph has a slope of 2 and a y-intercept of -3. ?

Question

A) 2x + y = -3

B) 2x - y = 3

C) 2x + y = 3

D) 2x - y = -3

Thanks so much in advance for all the help!

Answer 1

The key is knowing the Slope Intercept form of a line: y = mx + b  where m is the slope and b is the y-intercept.

Since your slope is 2 and your y-intercept is -3, plug it into the equation:

y = 2x - 3

Now you have to figure out which of the multiple choice answers equate to yours.  Key:  solve each of them for y until you find the one that matches yours.  

Ex:  A) 2x + y = -3

Subtract 2x from both sides to isolate y and you get

y = -2x - 3.  Since this doesn't match your's, that's not the right answer.  Now do this again for each of the remaining choices.

Answer 2

  B is the answer

Answer 3

B

Answer 4

B) 2x - y = 3

100% sure

you are welcome lol

Answer 5

Put the equations in standard form:

A) y = -2x -3

B) y = 2x -3

C) y = -2x +3

D) y = 2x + 3

Now the equations are in the form y = (slope)x + (intercept), so it is easy to  find the one with slope = 2 and intercept  = -3.

Answer 6

obviously the answer is B however, you are very lucky that ur in algebra right now, i regret not liking algebra and doing things just like you, going on yahoo answers for help and c**p but now since i moved up a grade level i wised i wouldve spent time acually learning algebra so if you dont get it, ask for help.

math will be extremely difficult as u get older.

Answer 7

y = mx + b

m=slope, b=y-intercept

y = 2x + (-3)

y = 2x - 3

2x - y = 3

Answer: B (2x-y=3)

Answer 8

If you studied and did your own work you would be able to answer this on your own.