This is probably a really stupid question.. but the slope intercept form is y=mx+b. what happens (or what do i do) when i get a minus sign instead of a plus sign? for example: y=mx-b. did i do something wrong? (in case anyone wanted to know my problem was 0.5x+y=-2 and i had to convert it into the slope intercept form, y=mx+b )

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.