Question

Select the equations that are parallel and perpendicular to y = 2x − 1 and that pass through the point (4, 1).

parallel: y = 2x − 7
perpendicular: y = x + 3

parallel: y = 2x + 2
perpendicular: y = x +

parallel: y = x − 7
perpendicular: y = 2x + 3

parallel: y = −2x − 7
perpendicular: y = x − 1

Answer 1

i need help on this question @Hero

Answer 2

format of linear graph: y = mx + b

In order for the other graph to be parallel m must be the same but the y-intercept (b) is different.
In order for the other graph to be perpendicular, both functions would have the same slope(m) but with different signs.

That's it, just take a look around the given answers for a function which matches the conditions above, plug the value of x for the given point in the formula and if you get the same y, that's the one ;)

Answer 3

And I believe there's a mistake, now that I look at the given equations, perhaps an error was made while copying the task?