What four points are contained in the equation y=4x-1

What signals you that factoring by grouping is the best method to use when factoring a problem?

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out