Find the slope of the line through each pair of points.
(-14, 15) and (-13, -12)

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

What is the difference between the equations of a vertical and a horizontal line?