Question

Can someone help me with this???
Which of the following is an equation of the line that passes through the point (1, 1) and has a slope of 2?
A.
y = 2x – 1
B.
y = 2x + 1
C.
y = –2x – 1
D.
y = –2x + 1

Answer 1

Recall y =mx+b

m = slope

x is a number in a domain. and b is the y intercept.

It says that when x =1 then y =1

so you can write

1=2(1)+b

then solve for b
and write out what y=mx+b.

Answer 2

Ok I got -2=b. But it doesn't answer the question because it's not one of the choices.

Answer 3

1-2=b
b=-1

Answer 4

Yes, recheck your math again. You should get -1.