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

Question

ajprincess · Answer

Compare the equation y=2/5x-3 with the general equation y=mx+c 
where
m-slope
c-intercept

ajprincess · Answer

Can u find the value of m for the equation  y=2/5x-3 @ChasingMaggie

anonymous · Answer

isn't the value of m 2/5?

ajprincess · Answer

yes m=2/5.
for parallel lines the slopes are same.
so the slope of the required line is 2/5.
$$m=\frac{y-y_1}{x-x_1}$$
$(x_1,y_1)$ is given as (1,-1). substituting this in the above formula solve the equation for y.

ajprincess · Answer

Does that help?

anonymous · Answer

I understand slope intercept form, but I don't understand how (1,-1) comes into play. Do I have to out that into the equation that is already laid out?

ajprincess · Answer

That is a point that lies on the required line. to calculate the slope of a line u need two points. but here u knw only one point. so u assume the other point as (x,y). u knw the slope too. Applying these values in the slope formula and solving for y will give u the required equation

anonymous · Answer

Just kidding, now I'm completely confused.

anonymous · Answer

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

ajprincess · Answer

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