Problem 1: Plug in the given value into the function and evaluate.

Problem 2: Solve the equation for y.

add 7x to both sides to move it to the right side of the equation.

Divide both sides of the equation by 2 to get a single y variable on the left hand side.

Simplify the terms to get the the equation into slope-intercept form.
The slope of the line is 
I'm a unsure what Problem 3 is asking for sorry I hope the rest is helpful.
Answer:
y=1
Step-by-step explanation:
If there's no specific answer for y on the page it would most likely mean 1
Answer:UP and QR
Step-by-step explanation:Too be honest I eye-ball it but I got right so take that how you want to
Yes, (-5,-6) is a solution to the equations!