What is the equation of a line passing through the point (a, b) and having a slope of b?

y = −bx − b(1 − a)
y = bx − b(a − 1)
y=1/bx+b(a-1)
y=-1/bx+b(1-a)

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Afootball is throw by a quarterback to a receiver

Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm. angle zxy measures 70º. what is the length of line segment xy? round to the nearest tenth. 8.2 cm 8.7 cm 22.6 m 25.5 cm