What is the point-slope equation of a line with slope -5 that contains the point (6, 3)

a. y+3=-5(x+6)
b. y-3=-5(x-6)
c. y+3=-5(x-6)
d. y-3=-5(x+6)

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0