What is parallel to the line y=2x and contains (-1,2)?

Question

trying to find general form and or slope intercept form...

Answer 1

Parallel lines have the same slope. Therefore, this line is in the form

y=2x+b

Substitute the coordinates of the point in this equation.

2=-2+b

4=b

Therefore, the line is y=2x+4

Answer 2

since the line is parallel to y=2x, it must have the same slope.  So keeping the slope 2, you get y=2x+b.  

put the values in to get 2=2(-1)+b  2=-2+b  Add two to both sides and get 4=b   Final equation is y=2x+4

Answer 3

y = 2x +4

parallel lines have to have the same slope

y = 2x + b

to find the B (the y intercept) just plug in the coordinates (-1,2) and you can solve for b

this works the same way you would have say a X and a B and you were solving for what Y value you would get...

so 2 = 2(-1) + b

2 = - 2 + b

4 = b

y = 2x + 4

Answer 4

I agree, the line has to have the same slope but a different y intercept.

since the coordinates are -1, 2

use slope intercept form, and rise over run to find the B, which is 4

Y= 2x +4