If $1=Rs. 102.50 and £ 1=Rs. 140, how many dollars equals £ 5?

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

Find the solution of each of the following.