Is this a multiple choice
Rearrange them to slope-intercept form
y = 7x + 2
y = -(1/7) x + 8
product of their slopes is 7 * -1/7 = -1 so they are perpendicular
Answer:

Step-by-step explanation:
We want to solve
given that
is acute.
We take tangent inverse of both sides to get:

Now set your calculator to degree mode and evaluate
to obtain:

To one decimal place, we have;

Hope you could understand.
If you have any query, feel free to ask.
Each card is almost drawn at the same frequency so the answer is c. the outcomes appear to be equally likely, so a uniform probability model is a good model to represent the probabilities in Tyra's experiment.