Question

Write an equation of the line through each point. Use slope-intercept form (1,-1); parallel to y=2/5x-3

Answer 1

do you know what the slope of the line y = 2/5x - 3 ?

Answer 2

Isn't the slope 2/5?

Answer 3

correct...and a parallel line will have the same slope.

Now we put it in point slope form : y - y1 = m(x - x1)
slope(m) = 2/5
(1,-1) x1 = 1 and y1 = -1

now sub your info into the formula and what do you get ?

Answer 4

y+-1=2/5(3-1)

Answer 5

let me get you started...
y - y1 = m(x - x1)
y - (-1) = 2/5(x - 1)
y + 1 = 2/5(x - 1)

can you finish and put it in y = mx + b form

Answer 6

I thought it would be -1=2/5(3-1)

Answer 7

no......
y + 1 = 2/5(x + 1)
y + 1 = 2/5x + 2/5
y = 2/5x + 2/5 - 1
y = 2/5x + 2/5 - 5/5
y = 2/5x - 3/5

or
y = mx + b
-1 = 2/5(1) + b and solve for b
-1 = 2/5 + b
-1 - 2/5 = b
-3/5 = b
so your equation would be : y = 2/5x - 3/5

you can do it either way

Answer 8

Oh, okay. I kind of get it. Is that all?

Answer 9

yes...your equation is y = 2/5x - 3/5