contestada

4.
(06.02 LC)
Line EF has an equation of a line y = −2x + 7. Which of the following could be an equation for a line that is perpendicular to line EF? (6 points)


y = 2x − 3

y = 1 over 2 x − 3

y = −2x − 3

y = − 1 over 2 x − 3

Respuesta :

blakeedwards2019
First, lets break down the sample equation: y=-2x+7
-2=m=slope
+7=b=Y-intercept

Using process of elimination:
A is not perpendicular because the angle created by slopes is unequal to 90
B and D are quadratic equations, and have no correlation with the sample equation
C is parallel to the sample equation

Is there a typo in your question? None of these answers are correct, but I am wiling to keep helping you, I enjoy Algebra. 

katecrofts04

Answer:

y = 1 over 2 x − 3

Step-by-step explanation:

this is because 1/2 is the negative reciprocal (so perpendicular) to -2