Question

Which is an equation for the line contains (1,2) and has the slope of 4

y=2x-4
y=-2x+4
y=4x-2
y=-4x+2

Answer 1

Which is an equation for the line contains (1,2) and has the slope of 4

Y=mx+b

2=4(1)+b

2=4+b

2-4=b

-2=b

Y= 4x-2

Answer 2

The slope is 4. That eliminates the first two answers

Y-y1=m(x-x1)
Y-2=4(x-1)
Y-2=4x-4
Add 2 to both sides
Y=4x-2