At camp, boys and girls
have the choice of
swimming lessons or
2 horseback riding lessons.
47 girls and 68 boys chose
swimming lessons. How
many boys and girls will
be taking swimming
lessons in all?

Where m is the slope of the line and b is the y-intercept of the line, or the y-coordinate of the point at which the line crosses the y-axis. to write an equation in slope-intercept form, given a graph of that equation, pick two points on the line and use them to find the slope. this is the value of m in the equation.

Iam guessing c. or d.