standard_description: Know that straight lines are widely used to model relationships between two quantitative variables. For scatter plots that suggest a linear association, informally fit a straight line, and informally assess the model fit by judging the closeness of the data points to the line.
problem_activity: Problem 1
Is 8 a solution to
$$\frac{3}{8}x-5=-2$$
? Show or explain why or why not.
Problem 2
Is
$$-2$$
a solution to
$$10-2x=4+x$$
? Show or explain why not.
Problem 3
Write an equation with
$$x=9$$
as a solution.
Problem 4
Write an equation with
$$x=0$$
as a solution.


aligns: no