#can I get some help pls
28 messages · Page 1 of 1 (latest)
- Wait patiently for a helper to come along.
- Once someone helps you, say thank you and close the thread with:
+close
- Feel free to nominate the person for helper of the week in #helper-nominations
what does parallel means in terms of slope
it means the coefficient of x is the same for both lines
eg:
y = 5x + 4, y = 5x - 20
The equation of a line with slope k passing through the point (x0, y0) is:
y = k(x - x0) + y0
Now, suppose you have two lines with slopes k1 and k2.
If they are parallel, then k1 = k2.
If they are perpendicular, then k1 k2 = -1.
ok
so for q17
the equation is
-4x+y=7
?
Let's see.
y = 4(x + 1) + 3
y = 4x + 7
So yeah, correct.
hi can I help you?
yes is this corrects for question 18
@lament yarrow
q18 -0.5x+y=2
No, that's not correct.
As the slope of the initial line is 1/2, the slope of the perpendicular line will be -1/(1/2) = -2. Thus, its equation is:
y = -2x + 2
Well, yeah.
ok thx