Practice problem
Below are two linear functions: y1=12x1+5y_1 = \frac{1}{2}x_1+ 5y1=21x1+5 y2=−12x2−5y_2 = -\frac{1}{2}x_2-5y2=−21x2−5
Are they parallel?
Yes
No
Not enough information to tell
Type a concept, like “slope” or “photosynthesis”.