Question

Which one of the following equations is parallel to y=-2x+1 and passes through (1,6)

a) -2x+y=8
b) 2x+y=8
c) -2x-y=8
d) 2x-y=8

Answer 1

what's the slope of y=-2x+1 ?

Answer 2

I dont know.How do i find out?

Answer 3

http://www.mathexpression.com/image-files/slope-intercept-examples.png

Answer 4

-2/1

Answer 5

is the slope?

Answer 6

@jdoe0001 im guessing the answer is A

Answer 7

yes, any parallel line to that equation, will also have the same slope, so
we know it has a slope of -2
we also know that it passes through the point (1,6)

so using the point-slope intercept form, that is \(\Large y-y_1=m(x-x_1)\)

plug your values in it
keep in mind that
m = -2
\(\bf (x_1, y_1) = (1, 6)\)

Answer 8

Thanks

Answer 9

yw